Traveling the city of Boston has never been this easy with the Go Boston Explorer Pass. This convenient digital pass (no need to print it out to use!) allows you to choose from 3, 4, or 5 out of 21+ of the finest attractions, tours, and activities in the city. See the Boston skyline from high above at the Skywalk Observatory. Take your family or friends for an educational day at the Museum of Science or witness the city from a completely different point of view by going on the Sunset Cruise.