During my down time, what are the must see places in the DC area? I have been to the Smithsonian, National Museum, and so in in DC. Where else do you all recommend?
Also, what are your favorite dining spots in the Crystal City area?  

There's a Good Stuff eatery in Crystal City -- they're a popular DC burger chain.  

The Indian restaurant (Kohinoor Dhaba) does delivery, it's a particular fave of mine when I'm in the area. Too far to walk, but delivery is cheap.

Freddie's Beach Bar is a gay bar staple in the area, but might not be your thing.

The Mansion at O street, The Catacombs, Dumbarton Oaks, the Hirshorn, Spy Museum, and Phillips Collection.  
The weather right now is nice enough to go to the Arboretum.  

I love Kabob Palace in Crystal City, also The Portofino and Queen Amannisa. Jaleo is cool too.  

I will check a few of those out! Thank you!

In fact, I walked to Jaleo for dinner yesterday and it was really good.

Yay! The weather today isn't super nice for the Arboretum but maybe later this week when it's not rainy LOL