The District is on the National Register of Historic Places due to its impressive collection of architecture that spans American history. Nathan Hale’s little red schoolhouse sits in the Parade Plaza. Robert Mills, architect of the Washington Monument, designed the US Custom House, and Carnegie Hall architect William Tuthill designed the impressive Mohican Apartments.
Stroll the Heritage Trail of 30 bronze plaques set in The District sidewalks, visit the US Custom House & Maritime Museum to learn about New London's whaling history, visit historic sites located throughout The District to learn of the city's important role during the American Revolution. A short drive along the waterfront brings you to Fort Trumbull, a 19th Century solid granite hexagonal fort built in the Egyptian Revival style with stunning views of local lighthouses and the harbor. Just beyond the fort is Eugene O’Neill's boyhood cottage, the setting for his best-known plays.