Renée and Henry Segerstrom Concert Hall is located in the Segerstrom Center for the Arts (originally called Orange County Performing Arts Center), a performing arts complex located in Costa Mesa, California, United States. It is a 1,704-seat theater-in-the-round adjacent to Segestrom Hall, whilst hosting the William J. Gillespie Concert Organ (C.B. Fisk Opus 130). It has 4,322 pipes and 75 stops, including 57 individual voices, 4 manual keyboards with 61 notes each., 1 pedal keyboard with 32 notes.