Boston CityPass is only $ 44 for 6 main Boston attractions! We were in Boston for 4 days and got to see the New England Aquarium, the Skywalk Observatory, the Museum of Science, and the Museum of Natural History. The only problem was that we ran out of time before we could see all 6 museums. We didn’t even get to the JFK Presidential Library or the Museum of Fine Arts. Each museum takes an entire day to explore — so make sure you have at least 6 days open to do everything. This is a great deal! Would definitely do it again. (As a side note: I didn’t particularly like the Museum of Natural History. It was small, out of the way, and the exhibits were disappointing. All the other museums were fabulous, though.)