1.

Visit the National Mall!

Stretching from the Lincoln Memorial and the US Capitol Building; Free

2.

Visit the Smithsonian National Museum of Natural History!

Free

3.

International Spy Museum!

Interactive exhibits and the foremost collection of spy artifacts in the world

4.

United States Botanic Garden

Oldest botanic gardens in North America; Free

5.

National Museum of Natural History

Free

6.

National Air and Space Museum

Free 

7.

National Portrait Gallery

Free

Things to do in DC

BOTANICAL GARDENS

THE NATIONAL MALL

WWII MEMORIAL

LINCOLN MEMORIAL REFLECTING POOL