Trip to Washington DC

I came back from my awesome & great FUN trip to Washington DC with my parents today. I drove from here (aka Jersey City) to Washington DC and back. I was the only one driving and it was totally fine actually. I took NJ Turnpike & I-95S toll road and drove 225 miles to DC in 3.5 hrs. Drove back toll free on I-95N & US-1N for 265 miles in 4.5 hrs... AWESOME!! & No tiredness or anything either.. Just AWESOME!! We were staying right in DC in China Town so everything was walking distance. So, this is what we saw/did:

• National Mall: Well this includes the area from Lincoln center to Capitol Hill and Washington Monument & World War II Memorial & The White House falls in it as well. It is kinda a lot of walking but all this can be done in half a day as we did. FYI - White House has a better view from the back, specially for pics.
• Capitol Hill: This gets a separate mention here because I did an inside tour of Capitol Hill (Thanks to Tani) and also got to sit at the visitor gallery in the Congress in Session. FYI: You can't take any backpacks or bigger bags, no food, drink or even water etc is not allowed.
• US Botanical Garden: It's right next to Capitol Hill, its ofcourse FREE like everything else there & its NICE. FYI: They have a nice audio tour where you can call a no# from phone, enter code given next to the plant or place u seeing and get lot more info.
• Smithsonian Natural History Museum: Now this is a really BIG Museum. You can wander here for days. It has dinosaur's fossils & skeletons, many other pre-historic skeletons of animals & humans, stones & rocks & minerals, Hope Diamond and LOT of other stuff. We almost completed it in half day. FYI: Start from the Dino exhibit because it's most interesting & entertaining. Most of the fun stuff is on the ground floor only.
• National Air & Space Museum: There are two Air & Space museums in the area, one is in DC at National Mall & other is in Chantilly, the Udvar Hazy Center. If you have to do one & you can manage to get out of city, do Udvar Hazy. It's bigger I think & has real space shuttle & a sky observatory to see 38 miles around & planes landing. It also has Enola Gay there & first passenger Concord  FYI: There's a $15 car parking at Udvar Hazy.
• ISCKON Baltimore: This is an Isckon Temple in Baltimore, Maryland called Kulin Gram. I always confuse this with the big Isckon Temple at Potomac, Maryland which has cows & bigger temple & fields & all that. But its still nice. FYI: It's just a small residential looking building on side of the road, so make sure you look for the board/sign outside at the location.