The National Museum of Natural History is part of the Smithsonian Institution and is located on Capitol Hill. Some of the Smithsonian Institution's pavilions are now open for free. As one of the world's most famous natural history museums, Washington's museums look unique. Its no surprise that the gem exhibition and the mummies exhibition are really shocking. Personal feeling is by far the most interesting pavilion, which displays skeleton specimens of various animals. This is definitely the most unique exhibition area in the world. Don't be scared if you come to eat.