The Nevada City Downtown Historic District is a 16-acre (6.5 ha) historic district in Nevada City within the U.S. state of California. Located in Nevada County, it was listed on the National Register of Historic Places in 1985. It dates from 1917, with examples of Moderne and Italianate architecture. The period of significance is 1856-1917. The historic district covers the downtown section roughly bounded by Spring, Bridge, Commercial, York, Washington, Coyote, and Main Streets. It includes 70 contributing buildings including the National Hotel, which is separately listed on the National Register. Several historical buildings have received California Historical Landmark status, and have been preserved.