Spend some time hanging out in the country's oldest park. The 50-acre Boston Common is the anchor for the Emerald Necklace park system and is the starting place of the famous Freedom Trail. There are quite a few monuments throughout the park, and several outdoor events take place in the Common throughout the year.
Set sail to see some of nature's most regal creatures on a New England Aquarium Whale Watch expedition. This tour will take you onto the waters east of Boston aboard a high-speed catamaran, and on your excursion you'll see humpback, finback, minke, and pilot whales, along with dolphins and other marine life.