The hop on hop off bus was excellent. We took it a number of times to get to various sights and we took it the first day to get an overall idea of Boston's layout. We also went to the Aquarium which was excellent. We recommend the Go Boston card for at least 2 days.
Super easy and definitely worth the money. The Red Socks game was awesome!
Use this card and a subway pass to catch all the sites. Wish I could have caught all the items outside of Boston.
Good mix of locations for all ages