Civic Arena (formerly the Civic Auditorium and Mellon Arena, nicknamed The Igloo) was an arena located in downtown Pittsburgh, Pennsylvania. The Civic Arena primarily served as the home to the Pittsburgh Penguins, the city's National Hockey League (NHL) franchise, from 1967 to 2010. It was the first retractable roof major-sports venue in the world, covering 170,000 sq. feet, constructed with nearly 3,000 tons of Pittsburgh steel and supported solely by a massive 260-foot-long cantilevered arm on the exterior.