Smithsonian National Museum of American History

Dinosaur skeletons, animal halls, minerals and ocean displays under one roof, so each kid finds a room they want to stay in.

Carved horses and an accessible chariot for riders who can't climb on, right between the museums.

Holocaust history told through one boy's life, made for kids eight and up. Plan to talk it through with them afterwards.

The founding documents themselves, with interactive displays that explain them. The line can run long, so go early.

A kids' concierge for 11 and under and a library of kids' books, so the hotel helps you plan the day around them.

Galleries inside and a sculpture garden outside, so when kids are done with paintings there is room to walk among the big pieces.