DC- A Sneak Peak

So this past weekend I headed down to Washington DC for an overnight getaway. Even though the the trip didn't really go as planned (at all), I definitely would love to go back. I didn't realize that DC was such a beautiful city. The architecture reminded me of buildings I have seen in Europe.

Two things that really surprised me: 
1) The city streets were SO EMPTY! There was hardly any traffic, and no crowds at all. Such a quiet city...who knew!?!
2) This city is so clean. We must have walked ten miles all over the city (no lie)...and I did not see any graffiti at all.

Have you been to DC in the past? What were some of your favorite places to visit while in town?