The Doha Convention Center and Tower is a 550m high tapering obelisk, containing a total of 112 stories. It begins with offices in its lower levels, followed by apartment floors, a hotel and penthouse residences in the upper levels of the narrower building shaft. At the top of the Tower a private club occupies a 60m high glowing glass cylinder, flanked by extensions of the obelisk facades and supported by a structural helix.