Boston and Cape Cod have a little bit better reputation on fun things to do, but don't despair. There are plenty of things to do south of Boston, many of which you may not have known existed. For instance, did you know about World's End in Hingham? This little spot has great views of Hingham Harbor and the coastline of Hull. It's a secluded piece of land that's far from most of the rest of town. If you're looking for something fun to do in a busier atmosphere, Plymouth Center and the waterfront have plenty to enjoy. Plymouth Center has hundreds of small shops, restaurants, cafes, and historical buildings to browse and shop. The waterfront area of Plymouth has Plymouth Rock, the Mayflower II, and beautiful views of Plymouth Harbor.
To the north, you can find Wompatuck State Park, with miles of bike trails and jogging paths. The towns of Hingham, Norwell, and Cohasset share this park. On the southern side of the South Shore, Carver and Plymouth share Myles Standish State Forest. This has hundreds of acres of ponds, paths, and woods to camp, hike, or bike. It's also a great scenic drive. Visit this page for the complete list of things to do south of Boston to get more ideas.