Approved by King County voters in 1968, with construction beginning in 1972, the Seattle Kingdome opened in 1976, becoming the new home to the Seahawks, Mariners, Supersonics & Sounders.
The first sporting event held at the Kingdome was the New York Cosmos vs the Seattle Sounders.
First rock concert was Wings on June 10, 1976.
From 1978-1979, the first season the Supersonics played in the KIngdome, they won their only championship
In 1989, Ken Griffey Jr hit a home run in his first ever plate appearance at the Kingdome and was the last player to hit a home run there in 1999.
The NCAA Final Four was held three times in the Kingdome - 1984, 1989 & 1995.
The Kingdome also hosted a Pro Bowl (1977), an MLB All-Star Game (1979) and the NBA All-Star Game (1987), making it the only venue to ever host all three all-star games.