DC in the spring is great! I love it!
Everyone had great suggestions. Mine (and I'm repeating some):
Spy Museum. It's one of the few museums that charge $ for entry, but it's fun. You can pre-order tickets online. I'd recommend going during the week as the weekends even off peak are insane.
Smithsonian American History Musem: It's my favorite. Where else can you see Lincoln's Top Hat and Fonzie's jacket all in one place? The restoration of the Star Spangled Banner is very cool as well. Note the little exhibit case next to the Pentagon flag - they usually rotate 9-11 items through there.
Smithsonian Natural History Museum: Hope diamond. The rest your kids may be too old for, but it's interesting.
Smithsonian Air and Space (on the Mall and in Dulles):
All the monuments are wonderful and very pretty in the springtime.
The National Catherdral. Wonderful gardens. great tour. Go up into the tower for a nice view. I usually combine this with the National Zoo (get panda viewing tickets ahead of time through the website. Panda mania has gripped DC with the birth of Tai Shan). Other than the baby panda, the zoo is a zoo.
Arlington Cemetary. Fabulous place. Very moving.
Mount Vernon in Alexandria. Beautiful in the springtime.
Manassas if you need to get out of the city.
If you need suggestions for dinner or want other info, FReepmail me. Enjoy your visit!
All interesting ideas!
I'll have to keep these in mind when I visit DC here soon.
Dear Lord. You had me right up until the Manassas part.
Ok. I'm sure you are talking about the Civil War aspect of it. But, ugh. Manassas?