The DeWint House, in Tappan, New York, is one of the oldest surviving structures in Rockland County and is an outstanding example of Hudson Valley Dutch Colonial architecture.

[3] It was built using brick and indigenous stone in 1700 by Daniel DeClark, a Hollander, who emigrated to America in 1676 and bought the land from Native Americans in 1682.

Washington returned from September 28 to October 7, 1780, for the nearby trial of British spy Major John André.

From November 11–14, 1783, a terrible snowstorm forced Washington to seek shelter in the DeWint House on his trip to visit West Point and later New York City, where he tendered his resignation.

The grounds include a 19th-century carriage house that contains displays of artifacts uncovered at the site during archaeological digs, as wells as items related to Washington, André and Arnold, and the Masons.