The Art of the Brick Lego exhibition on Newbury Street in Boston, any of the Harvard Museums, take a trip to Salem to poke around and visit the Peabody Essex Museum. Learn about the Gardner art heist through podcast, books, movie, and newspaper articles and then go visit the Isabella Stewart Gardner museum. Arnold Arboretum and Larz Anderson auto museum are pretty close to each other so could do both on the same day. Red Velvet Burlesque or Boston Beautease show. Harbor Cruise. Lots of great hiking in The Fells or Blue Hills. Tons of great walking tours in Boston. Take a ferry to P-Town and explore. Get to Plymouth for a day but don’t be surprised by how small Plymouth Rock is. JFK Presidential museum and Library