This mansion (MJM) or Roger and Mary Phillipse Morris House is located in Washington Heights and is the oldest house in Manhattan; the house played a major role during the American Revolution. The mansion was constructed in 1765 in the Palladian style and includes a portico with a pediment supported by Tuscan columns. It was originally the family home of Roger Morris and Mary Phillipse until 1775, but being British they left the country after the Revolution. The house became George Washington's temporary headquarters in 1776 and later became the headquarters of British Lieutenant General Sir Henry Clinton and the British and Hessian troops. Thus the house served both sides of the American Revolution at some time. At the end of the war the house became a popular tavern frequented by several of the most influential men of the time. The house was visited by several important historic figures including Thomas Jefferson, John Adams, Alexander Hamilton and John Quincy Adams. In 1810 Stephan Jumel purchased the house and after his death his widow remarried Aaron Burr and they continued living here during the 1830s. The house became the property of New York City in 1903. In 1961 it was declared a National Historic Landmark.

Today visitors can see the grand house which has been furnished in period style with rich décor, period furniture and wall coverings.  There are regular temporary exhibitions held in the house and visitors can choose to tour the house alone, with a guide or to take a guided tour which includes a tour of the neighborhood.