Civic Arena (formerly the Civic Auditorium and Mellon Arena, nicknamed The Igloo) is an indoor arena adjacent to Interstate 579 in downtown Pittsburgh, Pennsylvania that is currently undergoing demolition. It is the first retractable roof major sports venue in the world, covering 170,000 sq. feet and constructed with just shy of 3,000 tons of Pittsburgh steel. It boasts the largest retractable, stainless steel dome roof in the world supported solely by a massive 260 foot long cantilevered arm on the exterior.
Buildings - Misc