The Newport Historic District is a historic district that covers 250 acres (100 ha) in the center of Newport in the U.S. state of Rhode Island. It was designated a National Historic Landmark (NHL) in 1968 due to its extensive and well-preserved assortment of intact colonial buildings dating from the early and mid-18th century. Six of those buildings are themselves NHLs in their own right, including the city's oldest house and the former meeting place of the colonial and state legislatures. Newer and modern buildings coexist with the historic structures.