Head into battle on the field at Boston Paintball. Recreational warfare at its finest takes place here on the indoor and outdoor fields. Professional or novice paintballers are welcome; there's also a pro shop on site so you can stock up on all your paintball needs.
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.
Enjoy the natural beauty of the area at Arnold Arboretum. The arboretum is part of Boston's Emerald Necklace park system, and at 265 acres, it's the second largest part of the “necklace”. Throughout the park, you'll see a variety of plant species and animals like turtles, racoons, white-tailed deer, squirrels, and a variety of birds and insects. There are a number of tours to choose from, leaving you with plenty of options for exploring this outdoor destination.