Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. O-14 (Dubai) - O14 or O-14 is an office skyscraper located in Business Bay in Dubai United Arab Emirates. It is 102 m (335 ft) tall and has 23 floors. The building's floor area is 300000 sq ft (28000 m2). There is a 1 meter space between the facade and the windows which allows hot air to rise and cool air to come in from below. The facade is 40 cm thick and made of an extremely fluid concrete. It has 1000 circular openings of various sizes.
Building