The Rialto Theatre opened in 1920 as a vaudeville house and now serves as Tucson's main mid-sized concert venue — a slightly battered, balconied space across the street from the Hotel Congress. Capacity is around 1,200 and the acoustics are surprisingly good for the architecture.
The booking covers everything from touring indie bands to country, blues, and Latin acts; the ticketed events are listed on the website. The Rialto's outdoor R Bar in the alley is also a decent place for a drink before a show.