Visited DC last month and saw the (many) sites. Toured White House, Congress, several museums, Bureau of Printing and Engraving where all that money is rolling through the presses, Arlington Cemetary, etc.
Here's a select few from the A&S Museums. These were just fantastic, esp Udvar Hazy at Dulles, wow, what a collection, and nicely layed out and lighted, and not overly crowded unlike the main/original one on the mall.
Original Enterprise model, in the bottom floor of the Gift Shop.

LM.

Enola Gay.

N1K2 Shiden-Kai.

Ar-234.

Jim Irwin's suit.

F-4 and MiG-21.

MiG-15 and F-86, (with wife and son).

F-105.

Overall pan. Gives you an idea of the nice layout.
