13年前の9月11日、世界の誰もが知っていた超高層ビルが攻撃を受け、世界史を劇的に変えることとなった。
1973年に建設されたワールドトレードセンタービル。ニューヨークにそびえ立っていたこのビルが、狂信的なアルカイダの操縦するハイジャック機によってほんの数時間で倒壊させられた。
ペンタゴン（国防総省）への攻撃を企て、ペンシルベニア州に墜落した4機目の航空機を含めると、2977人もの市民が犠牲となった。
追悼のため、そしてテロに屈しないという意味も込めて、アメリカはグラウンド・ゼロと名付けられた倒壊現場と同じ場所に、以前よりも高いビルを建設する決定をした。
ワン・ワールドトレードセンタービルの高さは1776フィート（約541m）。これはアメリカの独立宣言が行われた年にちなむ。
このスライド写真は、あの日に起きた惨劇と、追悼のためにその後倒壊現場に作られたものと、顕著な対照を写し出している。
矢のついたツールを左から右にスライドして、写真を比較してほしい。
※パソコンでのみ比較写真が見られます
自由の女神像とともにマンハッタンの高層ビルが遠くに見える。
ツインタワーとエンパイアステートビル。後ろにフリーダムタワー。
ニューヨークの人たちがブルックリン橋を渡って猛烈な塵埃を逃れている。
2つの巨大タワーの残骸が残された全くの壊滅状態から、それに代わるものの土台が作られた。
9/11の攻撃前のニューヨーク市の高層ビルと、ワン・ワールドトレードセンターが写し出されているその後。
2014年9月11日、ニューヨーク。
Nation Prepares To Mark 13th Anniversary Of September 11th Attacks(01 of36)
JERSEY CITY, NJ - SEPTEMBER 10: The World Trade Center Tribute in Lights is seen from Liberty State Park on September 10, 2014 in Jersey City New Jersey. Tomorrow marks the 13th anniversary of the 9/11 terrorist attacks that claimed the lives of 2,996 people in New York City, Washington, DC and a field in Shanksville, Pennsylvania. (Photo by Kena Betancur/Getty Images) (credit:Kena Betancur via Getty Images)
Nation Prepares To Mark 13th Anniversary Of September 11th Attacks(02 of36)
JERSEY CITY, NJ - SEPTEMBER 10: The World Trade Center Tribute in Lights is seen from Liberty State Park on September 10, 2014 in Jersey City New Jersey. Tomorrow marks the 13th anniversary of the 9/11 terrorist attacks that claimed the lives of 2,996 people in New York City, Washington, DC and a field in Shanksville, Pennsylvania. (Photo by Kena Betancur/Getty Images) (credit:Kena Betancur via Getty Images)
Nation Prepares To Mark 13th Anniversary Of September 11th Attacks(03 of36)
JERSEY CITY, NJ - SEPTEMBER 10: The World Trade Center Tribute in Lights is seen from Liberty State Park on September 10, 2014 in Jersey City New Jersey. Tomorrow marks the 13th anniversary of the 9/11 terrorist attacks that claimed the lives of 2,996 people in New York City, Washington, DC and a field in Shanksville, Pennsylvania. (Photo by Kena Betancur/Getty Images) (credit:Kena Betancur via Getty Images)
Nation Prepares To Mark 13th Anniversary Of September 11th Attacks(04 of36)
JERSEY CITY, NJ - SEPTEMBER 10: The World Trade Center Tribute in Lights is seen from Liberty State Park on September 10, 2014 in Jersey City New Jersey. Tomorrow marks the 13th anniversary of the 9/11 terrorist attacks that claimed the lives of 2,996 people in New York City, Washington, DC and a field in Shanksville, Pennsylvania. (Photo by Kena Betancur/Getty Images) (credit:Kena Betancur via Getty Images)
Nation Prepares To Mark 13th Anniversary Of September 11th Attacks(05 of36)
JERSEY CITY, NJ - SEPTEMBER 10: The World Trade Center Tribute in Lights is seen from Liberty State Park on September 10, 2014 in Jersey City New Jersey. Tomorrow marks the 13th anniversary of the 9/11 terrorist attacks that claimed the lives of 2,996 people in New York City, Washington, DC and a field in Shanksville, Pennsylvania. (Photo by Kena Betancur/Getty Images) (credit:Kena Betancur via Getty Images)
Nation Prepares To Mark 13th Anniversary Of September 11th Attacks(06 of36)
JERSEY CITY, NJ - SEPTEMBER 10: The World Trade Center Tribute in Lights is seen from Liberty State Park on September 10, 2014 in Jersey City New Jersey. Tomorrow marks the 13th anniversary of the 9/11 terrorist attacks that claimed the lives of 2,996 people in New York City, Washington, DC and a field in Shanksville, Pennsylvania. (Photo by Kena Betancur/Getty Images) (credit:Kena Betancur via Getty Images)
Nation Prepares To Mark 13th Anniversary Of September 11th Attacks(07 of36)
JERSEY CITY, NJ - SEPTEMBER 10: People walk by the 9/11 memorial in Liberty State Park on September 10, 2014 in Jersey City New Jersey. Tomorrow marks the 13th anniversary of the 9/11 terrorist attacks that claimed the lives of 2,996 people in New York City, Washington, DC and a field in Shanksville, Pennsylvania. (Photo by Kena Betancur/Getty Images) (credit:Kena Betancur via Getty Images)
Nation Prepares To Mark 13th Anniversary Of September 11th Attacks(08 of36)
JERSEY CITY, NJ - SEPTEMBER 10: The World Trade Center Tribute in Lights and the Statue of Liberty are seen from Liberty State Park on September 10, 2014 in Jersey City New Jersey. Tomorrow marks the 13th anniversary of the 9/11 terrorist attacks that claimed the lives of 2,996 people in New York City, Washington, DC and a field in Shanksville, Pennsylvania. (Photo by Kena Betancur/Getty Images) (credit:Kena Betancur via Getty Images)
Nation Prepares To Mark 13th Anniversary Of September 11th Attacks(09 of36)
NEW YORK, NY - SEPTEMBER 10: The World Trade Center Tribute in Lights are seen from Brooklyn on September 10, 2014 in New York City. Tomorrow marks the 13th anniversary of the 9/11 terrorist attacks that claimed the lives of 2,996 people in New York City, Washington, DC and a field in Shanksville, Pennsylvania. (Photo by Michael Heiman/Getty Images) (credit:Michael Heiman via Getty Images)
Nation Prepares To Mark 13th Anniversary Of September 11th Attacks(10 of36)
JERSEY CITY, NJ - SEPTEMBER 10: Lower Manhattan is seen from Liberty State Park on September 10, 2014 in Jersey City New Jersey. Tomorrow marks the 13th anniversary of the 9/11 terrorist attacks that claimed the lives of 2,996 people in New York City, Washington, DC and a field in Shanksville, Pennsylvania. (Photo by Kena Betancur/Getty Images) (credit:Kena Betancur via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(11 of36)
NEW YORK, NY - SEPTEMBER 11: Sam Pulia, mayor of Westerchester, IL, and a former police officer of the same town, salutes the name of his cousin, New York firefighter Thomas Anthony Casoria, who was killed in the South Tower, prior to the the memorial observances held at the site of the World Trade Center in in New York on September 11, 2014. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Andrew Burton /Getty Images) (credit:Andrew Burton via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(12 of36)
NEW YORK, NY - SEPTEMBER 11: NY-Port Authority Police Officer Donna Przybyszewski takes a moment to herself before family members are let in for the memorial observances held at the site of the World Trade Center on September 11, 2014in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Chang W. Lee - Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(13 of36)
NEW YORK, NY - SEPTEMBER 11: Flowers are placed over names of vicitims of September 11, 2001 at the South Tower Memorial Pool before memorial observances are held at the site of the World Trade Center on September 11, 2014in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Chang W. Lee - Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(14 of36)
NEW YORK, NY - SEPTEMBER 11: Kevin Brosnan, a retired NYPD detective takes a moment to himself before family members are let in for the memorial observances held at the site of the World Trade Center on September 11, 2014in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Chang W. Lee - Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(15 of36)
NEW YORK, NY - SEPTEMBER 11: Janice Lynch, of Queens, New York, pauses at the inscription of her friend Patricia Massani\'s name at the North Pool for the memorial observances held at the site of the World Trade Center on September 11, 2014in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Justin Lane - Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(16 of36)
NEW YORK, NY - SEPTEMBER 11: White roses are placed in an inscribed name along the edge of the North Pool during memorial observances held at the site of the World Trade Center on September 11, 2014in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Justin Lane- Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(17 of36)
NEW YORK, NY - SEPTEMBER 11: Family members Maggie, Zach and Mitch Ellicott (kneeling), of New Jersey , take photos of the new One World Trade Center from the North Pool during memorial observances held at the site of the World Trade Center on September 11, 2014in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Robert Sabo- Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(18 of36)
NEW YORK, NY - SEPTEMBER 11: Anthony DeBlase (brother), (L) and Anita (mother), (R) hold the paper as Alexandra DeBlase (niece) makes a rubbing of their lost loved one James V DeBlase during memorial observances held at the site of the World Trade Center on September 11, 2014in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Robert Sabo- Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(19 of36)
NEW YORK, NY - SEPTEMBER 11: Members of the New York Police Department, Fire Department of New York and Port Authority Police Department carry an American flag past one of the reflecting pools at the beginning of the memorial observances held at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Andrew Burton/Getty Images) (credit:Andrew Burton via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(20 of36)
NEW YORK, NY - SEPTEMBER 11: Members of the New York Police Department, Fire Department of New York and Port Authority Police Department carry an American flag past one of the reflecting pools at the beginning of the memorial observances held at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Andrew Burton/Getty Images) (credit:Andrew Burton via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(21 of36)
NEW YORK, NY - SEPTEMBER 11: Women mourn as officials carry an American flag past them at the beginning of the memorial observances held at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Andrew Burton/Getty Images) (credit:Andrew Burton via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(22 of36)
NEW YORK, NY - SEPTEMBER 11: The lower Manhattan skyline is seen from the borough of Brooklyn September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Eric Thayer/Getty Images) (credit:Eric Thayer via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(23 of36)
NEW YORK, NY - SEPTEMBER 11: A single rose marks one of the names on the North Pool during memorial observances held at the site of the World Trade Center on September 11, 2014in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Robert Sabo- Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(24 of36)
NEW YORK, NY - SEPTEMBER 11: Paola Braut, of Belgium, kisses a photograph of her son Patrice along the edge of the North Pool during memorial observances at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Justin Lane-Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(25 of36)
NEW YORK, NY - SEPTEMBER 11: An American fly makes the name of a loved one at the North Pool Memorial site as One World Trade Center towers in the background during memorial observances held at the site of the World Trade Center on September 11, 2014in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Robert Sabo- Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(26 of36)
NEW YORK, NY - SEPTEMBER 11: A woman grieves at her husband\'s memorial at South Tower Reflecting Pool before the memorial observances held at the site of the World Trade Center before memorial observances are held at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Chang W. Lee-Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(27 of36)
NEW YORK, NY - SEPTEMBER 11: A woman and a child stand at the South Tower Reflecting Pool before the memorial observances held at the site of the World Trade Center before memorial observances are held at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Chang W. Lee-Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(28 of36)
NEW YORK, NY - SEPTEMBER 11: A woman grieves at her husband\'s memorial at South Tower Reflecting Pool before the memorial observances held at the site of the World Trade Center before memorial observances are held at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Chang W. Lee-Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(29 of36)
NEW YORK, NY - SEPTEMBER 11: Former New York City Mayor Rudolph Giuliani stands at the edge of the North Pool Memorial site during observances at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Justin Lane-Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(30 of36)
NEW YORK, NY - SEPTEMBER 11: Lito Deleon holds a photo of friend Wayne Russo, who died in the September 11, 2001 attacks, during memorial observances held at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Mark Lennihan-Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(31 of36)
NEW YORK, NY - SEPTEMBER 11: Belinda Adams (L), her niece, Deeanne Cush (C) and her mother, Belinda Adams hold pictures of Patrick Adams, who died in the September 11, 2001 attacks, during memorial observances held at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Mark Lennihan-Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(32 of36)
NEW YORK, NY - SEPTEMBER 11: (L-R) Former New York Governor George Pataki, former New York City Mayor Rudy Guiliani, former New York Mayor Michael Bloomberg, Mary Pat Christie and husband New Jersey Governor Chris Christie, New York Governor Andrew Cuomo and his partner Sandra Lee stand in silence while bells are sounded signifying the planes that crashed into the twin towers during memorial observances at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Chris Pedota-Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(33 of36)
NEW YORK, NY - SEPTEMBER 11: Former New York Gov. George Pataki visits the North Pool during memorial observances held at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Robert Sabo-Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(34 of36)
NEW YORK, NY - SEPTEMBER 11: Family members of Bobby Hughes mount near the North Pool during memorial observances held at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Robert Sabo-Pool/Getty Images) (credit:Pool via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(35 of36)
NEW YORK, NY - SEPTEMBER 11: The lower Manhattan skyline is seen from a ferry September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Eric Thayer/Getty Images) (credit:Eric Thayer via Getty Images)
New York Commemorates 13th Anniversary Of September 11th Attacks(36 of36)
NEW YORK, NY - SEPTEMBER 11: Eileen Esquilin hugs her husband, Joe Irizarry, while mourning the loss of her brother, Ruben Esquilin Jr, during the memorial observances held at the site of the World Trade Center on September 11, 2014 in New York City. This year marks the 13th anniversary of the September 11th terrorist attacks that killed nearly 3,000 people at the World Trade Center, Pentagon and on Flight 93. (Photo by Andrew Burton/Getty Images) (credit:Andrew Burton via Getty Images)
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