Important Places in America to Take Kids

Friends! Recommend me some Important Places in America to Take Kids for fun and remarkable tour. I heard that the American Museum of Natural History, New York is worth seeing places. Moreover The Rose Center for Earth and Space is also a great place. what will you say is this true? Moreover, let me know which Important Places in America to Take Kids because I wanna go with 2 day niagara falls tours from new york and want to explore its major attractions with my family.;

I think you are right American Museum of Natural History, New York are a nice option but if you want to take your kids for a picnic, then I think you should take them to Yosemite national park for a picnic or DC to visit the historical places of this region.