Smithsonian National Museum of Natural History, Washington DC

I had never been in a museum as amazing as this one; it's amazing, they have so many things to see; dinosaur fossils are the best, my three year old daughter enjoyed it very much, she has not stopped talking about it in the last two days. We went on a Sunday and it was quite long but it is not overwhelming because it is very big place, there was enough space to see and do things. the museum is very interactive, it has so many things to learn, a single day is not enough to learn about so many things. It has easy access for strollers and wheelchairs, there are multiple elevators, several shops for souvenirs and gifts, it has a very nice cafe area. you won't get bored here. In addition, everything is super clean and it is totally free. When you enter the museum you go through a lot of security but the process is fast.

An amazing (free) experience that was tons of fun for all of us and we all left smarter. Plan to spend at least 2 hours if you want to see most of the exhibits. If you want to read and learn about the exhibits it, allot at least 3 hours. They do have restaurants inside, ample restrooms and a nice gift shop. Our favorite exhibits were neanderthals exhibits and ancient animals, especially the dinosaur skeletons. They have many real looking animal exhibits, and detailed scientific background on them which was fun to learn.