Matador Gymnasium, most commonly known by its nickname the Matadome, is a 1,600 seat, indoor multi-purpose stadium on the campus of California State University, Northridge in Northridge, California. The Matadome, unlike many other traditional stadia, is located within Redwood Hall, which hosts many kinesiology classes for Cal State Northridge. Contrary to the name, Redwood Hall, and by default the Matadome, is not a dome at all - the roof is flat. The Matadome was completed in 1962 and was officially opened on 30 November of the same year.
The capacity of the Matadome has changed throughout the years. Before the 1994 Northridge earthquake, the Matadome had a capacity of over 3,000. The record attendance was 3,106 for a United States men's national volleyball team exhibition against Japan men's national volleyball team set on 02 November 1990, which was prior to the earthquake. After the earthquake, the upper section seats were removed to create more classroom space for Redwood Hall, and walls were put up to separate the Matadome from these new classrooms. Other renovations include the installation of a completely new floor in 1996 (with a redesigning in 2001), a drop-down scoreboard above half court in 1997, and chair-backed bleacher seats in 1998.