Castle Island is a National Register of Historic Places-listed peninsula within Boston Harbor, located within the city's South Boston district. The peninsula, which was connected to the mainland in 1928, is best known as the site of Fort Independence, a major fortification protecting Boston's shoreline since 1634. Visitors can view the eight-generation remnants of the fortress, constructed in its present form between 1833 and 1851. 22 acres of public recreational space are also offered at the park, including several connected swimming beaches open to families throughout the summer months. Several walking paths loop around the island, including the shorter Castle Island Loop and the longer Pleasure Bay Loop. Other amenities include a boardwalk, a children's playground, and a full-service restaurant.

Castle Island, 2010 William J Day Blvd, Boston, MA 02127, Phone: 617-727-5290

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