THE BOSSANOVA BALLROOM Home to music & community. Serving PDX subculture & the arts since 1907. Bossanova Ballroom. 11,000 square foot historic venue with a 650 person capacity. Live Concerts. EDM. Burlesque. Ballroom Level - The ballroom stage overlooks a 2,000 square foot dance floor with 25 foot high ceilings. Balcony level - Old Portland speakeasy feel with a small stage, excellent view of the main ballroom floor as well as the main stage. Check our concert links for VIP tables and seating.