高さ300メートルを誇る日本一高いビル、大阪の「あべのハルカス」が3月7日にグランドオープンした。これに伴い、近畿日本鉄道は2013年11月27日から、ビルの壁面で「100日カウントダウン」（ビル照明）を実施した。
100日カウントダウンでは、単なる数字を表示するだけでなく、「★」マークや「2014」などのほか、スマイルマークやクリスマス、大晦日の演出も行われた。
しかし、途中でカウントダウンの数字が雑になり、オープンまで残り10日台になると、もはや何が書かれているのか判読できない日や、間違った数字が表示される日も出ていた。この100日間を写真で記録した市民がいた。100日分の写真がまとめられている動画を紹介しよう。
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あべのハルカス 画像集
あべのハルカス／地上約３００メートルの眺望 (01 of11)
高さ日本一の超高層ビル「あべのハルカス」が全面開業。地上約３００メートルの高さの展望台で、笑顔を見せる大阪市立常盤小学校の生徒ら＝７日午前、大阪市阿倍野区 \n\n撮影日：2014年03月07日 (credit:時事通信社)
あべのハルカス／全面開業 (02 of11)
全面開業した超高層ビル「あべのハルカス」の展望台に向かう人たち＝７日正午すぎ、大阪市阿倍野区 \n\n撮影日：2014年03月07日 (credit:時事通信社)
あべのハルカス／高さ日本一の超高層ビルで笑顔 (03 of11)
高さ日本一の超高層ビル「あべのハルカス」が全面開業。地上約３００メートルの高さの展望台で行われたセレモニーで、笑顔を見せる大阪市立常盤小学校の生徒ら＝７日午前、大阪市阿倍野区 \n\n撮影日：2014年03月07日 (credit:時事通信社)
あべのハルカス近鉄本店 (04 of11)
２２日に全館開業する「あべのハルカス近鉄本店」＝１９日午前、大阪市 \n\n撮影日：2014年02月19日 (credit:時事通信社)
あべのハルカス近鉄本店 (05 of11)
２２日に全館開業する「あべのハルカス近鉄本店」＝１９日午前、大阪市 \n\n撮影日：2014年02月19日 (credit:時事通信社)
あべのハルカス (06 of11)
あべのハルカス＝４日、大阪市阿倍野区 \n\n撮影日：2014年02月04日 (credit:時事通信社)
公開された「ハルカス３００」 (07 of11)
報道陣に公開された「あべのハルカス」の地上約３００メートルの高さにある展望台「ハルカス３００」＝１９日午前、大阪市阿倍野区 \n\n撮影日：2013年12月19日 (credit:時事通信社)
公開された「ハルカス３００」 (08 of11)
報道陣に公開された「あべのハルカス」の地上約３００メートルの高さにある展望台「ハルカス３００」＝１９日午前、大阪市阿倍野区 \n\n撮影日：2013年12月19日 (credit:時事通信社)
公開された「ハルカス３００」 (09 of11)
報道陣に公開された「あべのハルカス」の地上約３００メートルの高さにある展望台「ハルカス３００」＝１９日午前、大阪市阿倍野区 \n\n撮影日：2013年12月19日 (credit:時事通信社)
公開された「ハルカス３００」 (10 of11)
報道陣に公開された「あべのハルカス」の地上約３００メートルの高さにある展望台「ハルカス３００」＝１９日午前、大阪市阿倍野区 \n\n撮影日：2013年12月19日 (credit:時事通信社)
「あべのべあ」のご招待 (11 of11)
大阪市阿倍野区にある高さ日本一の高層ビル「あべのハルカス」で１９日、地上約３００メートル部分にある展望台のハルカス３００が来年３月の開業を前に、一足早く報道陣に公開された。あいにくの曇り空ながらも大阪の街並が一望でき、展望台キャラクターのあべのべあ（右）もご満悦な表情？ \n\n撮影日：2013年12月19日 (credit:時事通信社)
'World's Largest Building' Opens
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The \'New Century Global Centre\' building is seen behind an artificial lake in Chengdu, in southwest China\'s Sichuan province on June 6, 2013. The center, claimed by Chinese officials as \'the world\'s largest standalone structure\', opened to the public on June 28. The 100m high \'New Century Global Centre\' is a symbol of the spread of China\'s boom: 500m long and 400m wide, with 1.7 million square metres of floor space - big enough to hold 20 Sydney Opera Houses, according to local authorities. \n\n(STR/AFP/Getty Images) (credit:Getty Images)
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(STR/AFP/Getty Images) (credit:Getty Images)
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Workers make last minute preparations at a water park in the \'New Century Global Centre\' building, which opens to the public in Chengdu, southwest China\'s Sichuan province on June 28, 2013. The center, claimed by Chinese officials to be \'the world\'s largest standalone structure\', measuring 500 metres in length and 400 metres in width, with 1.7 million square metres of floor space -- big enough to hold 20 Sydney Opera Houses -- is the latest symbol of China\'s economic boom. \n\n(STR/AFP/Getty Images) (credit:Getty Images)
Bizarchitecture: The 10 Craziest Buildings In The World
Stone House(01 of11)
This sweet little stone house tucked away in the Portugal mountains is rumored to be inspired by the Flinstones! If only watching cartoons turned out so well for the rest of us... (credit:Flickr: Jsome1)
Edificio Mirador(02 of11)
This postmodern beauty located just north of Madrid, Spain was made to symbolize an apple, an urban area bound by streets on all sides. This is a vertical apple. (credit:Flickr: javier1949)
Cube Houses(03 of11)
The Netherlands Cube houses are innovative cubic living structures tilted at a 45 degree angle. His designs are meant to represent a forest, with each cube serving as a tree. (credit:Flickr: Peter Huys)
The Inside-Out Building(04 of11)
With its staircases, power conduits and water pipes on the outside, this is probably the most avant-garde insurance institution you will ever see. Built in 1978, this building was the first in the UK to build glass elevators.
Burj Al Arab(05 of11)
This Dubai luxury hotel, the 2nd tallest hotel in the world, is designed to mimic the sail of a ship and exists on an artificial island. It is misleadingly often referred to as a 7-star hotel, though technically the scale ends at 5-star. The building, often criticized for a less-than-tasteful interior, has been dubbed a \"triumph of money over practicality.\" (credit:Flickr: James Cridland)
National Centre for the Performing Arts(06 of11)
This Beijing Opera House is colloquially called \'The Bird\'s Egg,\' and measuring in at 12,000 square meters in size, we would not want to see that bird. The whole dome is surrounded by an artificial lake. It cost about $504 million to construct. (credit:Wikimedia Commons)
Eden Project(07 of11)
The UK\'s Eden Project is as ecofriendly as it is beautiful. Home to the biggest greenhouse in the world, the Project also contains two giant biodomes which house thousands of diverse plant species from around the world. (credit:Creative Commons)
Kunsthaus Graz(08 of11)
This contemporary art center was built in Austria in 2003. The exterior façade is called BIX, a combination of \"Big\" and \"pixels.\" Its acrylic glass skin becomes a vehicle for communication, an oversized urban screen, home to many art exhibits.
Klein Bottle House(09 of11)
This Australia shell-shaped house was created by topographical mathematicians. In mathematics a \'klein bottle\' is a surface on which left and right cannot be consistently defined; it is a surface without boundary. The house, like a work of origami, folds into itself to become one continuous volume. (credit:roryrory)
KawaKawa Public Toilets(10 of11)
This funky fresh New Zealand building really is a public toilet. With an interior just as celebratory, who needs a newspaper?! (credit:Flickr: cgullz)
The Hole House(11 of11)
Somewhere in Texas, \"A condemned house in Houston, Texas was sucked into a small wormhole; its wooden facade slowly slurped though another dimension and spit out into an alley behind the backyard.\" Cool. (credit:Flickr: melinnis)