Participate in the Ducklings Day Parade
Go to the Haymarket
Go to Faneuil Hall Marketplace
Ride the swan boats in the Public Garden
Visit Cape Cod (what to do there?)
Visit Martha's Vineyard
See some lighthouses
Visit some farms in the summer (which ones?)
Go to the New England Aquarium
Go to the Children's Museum
Go to the Franklin Park Zoo
Day trip to the Mystic Aquarium
Visit Maine's coast again (where should we go?)
What else?