File:National Mall (50897571958).jpg - Wikipedia
Smithsonian Institution - Simple English Wikipedia, the free encyclopedia
National Mall - Wikipedia
National Mall - Wikipedia
National Museum of Natural History - Wikipedia
National Mall - Wikipedia
National Air and Space Museum - Wikipedia
File:National Mall, Washington, D.C. (20100325-DSC01391).jpg - Wikimedia Commons
Washington, D.C./National Mall – Travel guide at Wikivoyage
National Mall - Wikipedia
File:Fourth of July Washington D.C. Washington Monument National Mall (52195797136) (cropped).jpg - Wikipedia