Smithsonian main building (visitor center); was the first built for the museum.
It is the oldest looking building on the Mall.

Inside the Air and Space Museum.  These are the real thing, not replicas:

Lorrie standing with the V2:

I'm standing in front of an Apollo/Soyuz link-up; again, the real thing.
They also had Skylab that you could walk through, a real Lunar Landing module, real moon rocks,
a Lunar Landing simulation that put you in the place of the astronauts landing on the moon
(did you know that the 2 astronauts were standing, not sitting by the windows while landing?).

On the Mall.  The Washington Monument was in repair and covered with scafolding:

Closeup of Washington Monument at night: