An island in Venice, containing the old mercantile quarter of medieval Venice. The Rialto Bridge, completed in 1591, crosses the Grand Canal between Rialto and San Marco islands.
1A city in southwestern California, west of San Bernardino; population 98,700 (est. 2008).
2An island in Venice, Italy, that contains the old mercantile quarter of medieval Venice. The Rialto Bridge, completed in 1591, crosses the Grand Canal between Rialto and the San Marco Islands.