The Thomas Law House (Honeymoon House) was constructed between 1794 and 1796 near present-day 6th and N Streets, Southwest in Washington, D.C. The builder was a syndicate headed by James Greenleaf, an early land speculator in the District of Columbia.

Southwest is the southwestern quadrant of Washington, D.C., the capital of the United States, and is located south of the National Mall and west of South Capitol Street. It is the smallest quadrant of the city, and contains a small number of named neighborhoods and districts, including Bellevue, Southwest Federal Center, the Southwest Waterfront, Buzzard Point, and the military installation known as Joint Base Anacostia–Bolling.