The President's House in Philadelphia was the third U.S. Presidential Mansion. George Washington occupied it from November 27, 1790, to March 10, 1797, and John Adams occupied it from March 21, 1797, to May 30, 1800.
The house was located one block north of the Pennsylvania Statehouse, now known as Independence Hall, and was built by Mary Masters, a widow, around 1767. During the 1777–1778 British occupation of Philadelphia, it was headquarters for General Sir William Howe and the British Army. The British abandoned the city in June 1778, and the house became headquarters for Military Governor Benedict Arnold.
Wikipedia https://en.wikipedia.org/wiki/President's_House_(Philadelphia)
Official Website https://www.nps.gov/inde/planyourvisit/presidentshousesite.htm
Address 524-30 Market Street, Philadelphia, Pennsylvania 19107, USA
Coordinates 39°57'1.629" N -75°9'0.346" E
