“Island or peninsula?” That is the question we should ask ourselves about Castle Island. This isn’t your typical island tale. Castle Island in South Boston is a place where land and sea dance together. It is a spot with a captivating history.
Originally, Castle Island was detached from the mainland. But in 1928, a concrete causeway linked it to the mainland. Now, it is both island and peninsula. The 22-acre state park beckons with stories etched in stone and whispered by the wind.
The heart of Castle Island is Fort Independence. This military structure was built between 1834 and 1851. But it is not the first. Eight such structures have stood guard here. The ground beneath our feet holds centuries of military history. Fort Independence is one of the oldest fortified military sites in North America. Its history began in 1634.
Though its name’s origin is uncertain, one predecessor was known as Castle William. British forces burned it as they retreated from Boston in 1776. Imagine the flames against the night sky. Think of the chaos as a new nation was being born.
Famous figures have walked this ground. Paul Revere and Edgar Allan Poe both served here. Poe’s story “The Cask of Amontillado” was inspired by legends from the fort. A dispute between two officers fueled his dark imagination. Poe served here for five months in 1827. Fort Independence is a National Historic Landmark. Both the fort and Castle Island are on the National Register of Historic Places.
Today, you can explore the granite-lined halls of Fort Independence. Guided tours are available on weekends and holidays until Columbus Day. The Castle Island Association hosts them.
Another highlight is Pleasure Bay. This enclosed lagoon and beach area is popular for sunbathing. There’s even a fishing pier for those who enjoy angling. Harbor views, sea breezes, and beaches enhance the allure. History is palpable.
Castle Island has been connected to the mainland since 1928. Indigenous people accessed Castle Island seasonally for thousands of years. They saw this area as a strategic military location. In the 1630s, Governor John Winthrop ordered the construction of the first fortification on this site.
Originally named for William II of England, the fortification became known as Castle William. The General Court of Massachusetts ordered the imprisonment of at least one Quaker, Indigenous people, and French prisoners starting on the island as early as 1661.
Growing tensions led to the withdrawal of the colony’s charter in 1684. Colonists arrested Sir Edmund Andros and sent him to Castle William. Andros tried to escape by dressing in women’s clothing. He was caught and eventually sent to England.
The 1700s brought expanded uses of Castle Island. In 1764, the island housed around 3,000 patients during a smallpox epidemic. Following the Boston Massacre in 1770, British troops retreated to Castle William. The British eventually deserted Castle Island. They evacuated Boston in spring 1776, leaving the fort and the island in flames.
Beginning in 1785, the island was a place for thieves and convicts. The federal government took control in 1798. In 1799, President John Adams designated the fortification as Fort Independence. A Marine Hospital dedicated to sick sailors also opened. In 1800, construction began on a new fort.
In 1826, Edgar Allan Poe enlisted in the military. He spent five months on Castle Island. While at Fort Independence, Poe heard the story of a duel. It inspired Poe’s 1846 short story “The Cask of Amontillado”.
In 1890, the government allowed for a park to be built. Frederick Law Olmsted served as the park designer. Today, Castle Island is operated as a state park. It remains open for year-round visitation. So, come and explore the layers of history. Feel the ocean breeze. Let Castle Island capture your imagination.