The Coliseum Arena is currently under naming rights of Oracle, so goes by the name of Oracle Arena. It is used for Warriors basketball games, concerts, and other events. It has a seating capacity of 19,596 for basketball, and slightly more for concerts.
The arena was completed in 1966, and opened November 9, 1966. In 1996-1997, a major renovation was done, and increased the seating from about 15,000 to the present size.