Ithaca Falls, a broad waterfall on Fall Creek in Ithaca, New York, is the last in a series of falls where a hanging valley meets the glacial trough of Cayuga Lake. Long prized for both scenery and waterpower, it became an early industrial center after Ezra Cornell built a tunnel and diversion dam in 1830 to feed mills and foundries nearby. Ruins of that period remain near the base. The surrounding land later saw park expansion, environmental cleanup, and redevelopment after contamination from the Ithaca Gun Company factory. Today the falls are a city landmark, recreation spot, and enduring symbol of Ithaca.