From CitySearch:

Overview
The stage is set for a classical-music renaissance in L.A., thanks to this state-of-the-art venue. Designed by famed architect Frank Gehry, the curved, stainless-steel exterior adds a modern sheen to downtown's historic Bunker Hill. Inside, the main hall is a wonder of aesthetics and acoustics. Rippling Douglas fir ceilings create a sense of movement, while adding warmth and resonance to sound quality. The 2,265 seats are arranged in a terraced, "vineyard"-style design to further enhance the aural and visual experience.

The Experience
Along with the main hall, the five-story venue houses the BP Hall, a more intimate space for special events; and the REDCAT, a 250-seat theater and art gallery operated by CalArts. There's also a gift store and two dining options--Joachim Splichal's renowned Patina restaurant and the casual Concert Hall Cafe. Outside, two small amphitheaters host special performances, while landscaped gardens provide an oasis of natural beauty amid downtown's concrete jungle.