Oakland Coliseum is the biggest MLB stadium, with a seating capacity of a whopping 56,782.

The Coliseum opened for play in 1966, though the Oakland A’s didn’t begin playing there until 1968 after moving from Kansas City. The Oakland Raiders of the NFL were also tenants of the Oakland Coliseum from 1966 through 1981 (when they moved to Los Angeles) and from 1995 through 2019, when they moved to Las Vegas.