The Devon Tower

At 259 meters (850 feet), the Devon Energy Tower in Oklahoma City is the tallest building in the city and in the entire state of Oklahoma. A striking postmodern landmark on the skyline, it was completed in 2012 and has since served as the headquarters of the oil company of the same name. Designed by Pickard Chilton Architects, the building has 50 floors above ground and a fully glazed facade resting on a reinforced concrete structure. Its 139,000 square meters (about 1.5 million square feet) of floor space house mainly the company's offices, while the mechanical systems are located in the basement. The tower replaced the previous record holder, the Chase Tower, and now decisively shapes the city's skyline.