The Phillips Collection

An art museum in a beautiful Washington townhouse, the Philips collection has an impressive permanent collection and typically good rotating exhibitions. Be sure to see Renior's Luncheon of the Boating Party, as well as works by El Greco, Matisse, van Gogh, O'Keeffe, and more.

Renwick Gallery

The Renwick Gallery is an art museum focusing on American crafts and decorative arts from the 1800s through the present. The permanent collection is underwhelming; the real draw is the rotating exhibitions, which can be incredibly cool.

National Gallery of Art

The National Gallery of Art houses a large permanent collection of works, tracing the development of Western art from the Middle Ages to the present. The East Wing focuses on modern art, and the museum's Sculpture Garden contains works from the Gallery's collection, as well as loans and special exhibitions, and a collection of native American trees and plants.

National Archives Museum

The National Archives houses the United States's most important historical records, including the original Declaration of Independence and Constitution. Rotating exhibits highlight other important historical documents.

International Spy Museum

A fun, interactive museum exploring the history and techniques of espionage. Great for adults and kids alike, the museum has informative exhibits as well as activities that teach you what it's like to be a spy.

Smithsonian National Air and Space Museum

The national air and space museum is a necessary stop for anyone interested in aircraft of space travel. It's got incredible exhibits detailing the history of aviation and space exploration, including real vehicles, replicas, and a moon rock you can touch. This is probably the best collection on the history of air and space travel anywhere.

Musée Toulouse-Lautrec

If you like the artist Toulouse-Lautrec (ie the one who painted all those famous poster-like pictures of the Moulin-Rouge and dancers), this museum is for you. Even if you only kind of like his art, this museum is an impressive collection (biggest in the world of his art) and very fun to wander through.