According to the official Super Bowl website, this Sunday's game will be the 9th Super Bowl played in Miami, and the 4th at Dolphin Stadium. The other 5 were played at the Orange Bowl.
Originally named Burdine Stadium in the late 1930s, the Orange Bowl was renovated and enlarged periodically over the years. In the 1960s it could seat 80,000, and acquired a MiMo flair.
Dolphin Stadium, designed by HOK Sport, opened in 1987. To prepare for Super Bowl LXI, the stadium underwent renovation and construction work. The City of Miami is redeveloping the Orange Bowl.
For local coverage of the Super Bowl and tips on visiting Miami, check out Dave Barry's Blog.