The Silverdome refers to the stadium that opened in what year?
Pontiac Silverdome The Pontiac Silverdome, formerly known as the Silverdome, is a stadium in Pontiac, Michigan, United States, which is a suburb of Detroit. It opened in 1975 and sits on 127 acre of land. When the stadium opened, it featured a fiberglass fabric roof held up by air pressure, the first use of the technique in a major athletic facility. The roof has since been destroyed. With a seating capacity of 82,000, it was the largest stadium in the National Football League (NFL) until FedExField (91,000 capacity) in suburban Washington, D.C., opened in 1997.
Apogee Stadium Apogee Stadium is a college football stadium located at the junction of Interstate 35 East and West in Denton, Texas. Opened in 2011, it is home to the University of North Texas (UNT) Mean Green football team, which competes in Conference USA. The facility replaced Fouts Field, where the school's football program had been based since 1952.