Boettcher Concert Hall is home to the Colorado Symphony Orchestra and is the nation’s first symphony hall in the round designed to place the audience close to the stage in a unique environment – 80% of the seats are within 65 feet of the stage. Boettcher Concert Hall’s walls are canted at a slight angle to disperse sound and prevent flutter echoes. On each curved surface of the hall is a wave-like band, approximately four feet high, technically called an undulating acoustical facia. These facias diffuse, reflect and channel sound throughout the venue. The seats in Boettcher are custom-designed, made from steam-bent plywood with their backs varying in height from 42 inches to 48 inches.