From museums to monuments, there are so many Washington DC things to do with kids. The Smithsonian is a good place to start. Whichever museum you pick—whether your family's style is more taxidermied critters, airplanes and rockets, or artworks—guided tours make exploring collection highlights (and entertaining young visitors) easy. Alternatively, more active family-friendly Washington DC experiences range from Segway excursions (age restricted) to bike tours.