Venice, Italy, is situated upon 118 small islands that are separated by canals and linked by bridges. The Grand Canal—the city’s 2.4-mile-long (3.9 km) central waterway lined by 170 buildings—is visible in this Overview. With water so central to the city, Venice is already starting to feel the impacts of rising tides and sea levels. Living by water is the norm for most urban dwellers, with 90 percent of major urban areas situated on the coast of a major body of water.