National Museum of Natural History
Open with the museum that needs no selling.
The dinosaur hall is the one every kid comes to Washington for: a real T. rex posed over a Triceratops, a mammoth, and a fossil lab where staff work on specimens in plain view. Add the elephant in the rotunda, the Hope Diamond, the whale over Ocean Hall and the live Insect Zoo, and your six- and nine-year-old are equally sold. It's free and weather-proof. Give it two or three hours, choose two or three halls, and let the kids set the order.
National Museum of Natural History on the map
Photo: Clelia Ceballos
