7. The National Museum of the American Indian
The National Museum of the American Indian is currently part of the Smithsonian Institution. Its main building is located in Washington D.C. and it possesses a satellite branch in New York City at the former Alexander Hamilton Customs House, a Cass Gilbert building at the foot of Broadway at Bowling Green. The Museum was originally founded as the Museum of the American Indian by Gustav Heye in 1916 and was located in Audubon Terrace, before being absorbed into the Smithsonian. Today, Audubon Terrace is home to the American Academy of Arts and Letters and The Hispanic Society (which has some stunning galleries).