Winterland Ballroom (often referred to as Winterland Arena or simply Winterland) was an ice skating rink and 5,400-seat music venue in San Francisco, California. Located at the corner of Post Street and Steiner Street, it was converted to exclusive use as a music venue in 1971 by rock promoter Bill Graham and became a common performance site for many of the most famous rock music artists. Bill later formed a merchandising company he called Winterland which also included concert shirts, memorabilia as well to NHL, NFL, MLB from fan shirts to Super Bowl, World Series, and National Basketball Championships.