OT: What to see in Washington DC over 24 hours

Well, I'm in DC now. It's not snowing or raining but definitely cold. I'll hit the monuments and museums tomorrow, as I actually met up some friends I didn't expect and spent the day with them. It's definitely a nice city, lots to photograph even just on the streets.

I'll put something up here in 2-3 days. I do need to get back home tomorrow, so I won't see the inauguration...

Cheers