A retractable roof is a roof system designed to roll back the roof of a structure so that the interior of the facility is open to the outdoors. Retractable roofs are sometimes referred to as operable roofs or retractable skylights. The term operable skylight, while quite similar, refers to a skylight that opens on a hinge, rather than on a track.
The Johan Cruyff Arena in Amsterdam, with the retractable roof opened and closed
Civic Arena, built in 1961
Rod Laver Arena, Melbourne.
Tower and cables for retractable roof at the Olympic Stadium, Montreal
The Civic Arena, formerly the Civic Auditorium and later Mellon Arena, 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.
Civic Arena (Pittsburgh)
The Civic Arena during a Penguins game in 2008
Pittsburgh Penguins players past and present were honored during a pregame ceremony prior to the final regular season game at Mellon Arena, April 8, 2010.
Panoramic view of the Civic Arena from D-Level in October 2007. The balconies on either end of this photo were not part of the original structure. The lower E-level balcony was added in 1975 and the upper F-level balcony was added in 1993 season to expand seating capacity.
