Doha Tower and Convention Center

The Doha Convention Center Tower is a canceled 551 m (1,808 ft) tall skyscraper project which was planned to be constructed in Doha, Qatar.[3][4] The structure, shaped like a tapering obelisk, would have housed offices on the lower levels, apartments, a hotel and penthouse residences on the upper floors. At the very top, a private club was to occupy a 60 m (200 ft) high glass cylinder surrounded by extensions of tower's façade and supported by a structural helix.[5]

Construction was suspended following the discovery that the building would impact flight paths to and from Doha International Airport.[2] Construction was expected to continue when the Hamad International Airport was completed on reclaimed land approximately 3 km to the east of the current airport.[2] The delay meant that the building's completion date was moved from 2012 to an unknown date.[1][2] The Tower was redesigned with a similar shape similar to the nearby Al Quds Endowment Tower. After the completion of Hamad International Airport, the plans for the supertall skyscraper were scrapped; however, the convention center was successfully built, and opened in 2015.