My wife and I lived in New York City a few years ago and we took that opportunity to visit some of the most famous attractions in the city during the weekends. On one of the weekends, we headed to the Museum of Natural History. We spent a whole day there and did not manage to see it all. There were so many cool exhibits and so much information available that moving through the halls was slow. We had a great time though and learned a lot. We also included a trip to the planetarium which was totally worth it.