Rotunda of the Smithsonian Institution National Museum of Natural History in Washington, D.C. (@ National Geographic Image Collection/Alamy)

Rotunda of the Smithsonian Institution National Museum of Natural History in Washington, D.C. (@ National Geographic Image Collection/Alamy)

comments,

• Welcome to the rotunda.""Whoa! What\s charging on the left?
• If ever there was a Hall of Fame for Earthly Wonders...""This is it
• Welcome to one of the more popular wings...""Of \"the nation\s attic\"
• What do you say to a federal city celebrating its 223rd birthday today?""You look capital!