The Hay–Adams is an historic luxury hotel opened in 1928, located at 800 16th Street NW in Washington, D.C. It south-fronts on Lafayette Square across from the White House. It sits on the former site of connected 19th-century mansions, which were owned by two influential friends, John Hay and Henry Adams, which led to the hotel's naming.

16th Street Northwest, briefly known as the Avenue of the Presidents, is a prominent north-south boulevard in Washington, D.C., located in Northwest D.C. The street was laid out as part of the 1791 L'Enfant Plan, which served as the original blueprint for the city. The street begins just north of the White House, across from Lafayette Square in the President's Park, and continues north along the Washington meridian until Blair Circle.