Hard Rock Cafe is a chain of theme restaurants founded in 1971 by Americans Peter Morton & Isaac Tigrett. In 1979, the cafe began covering its walls with rock and roll memorabilia, a tradition which expanded to others in the chain. In 2006, Hard Rock was sold to the Seminole tribe of Florida, and is headquartered in Orlando, Florida. The largest Hard Rock is in Orlando. Currently, there are 150 Hard Rock locations in 53 countries.