Perhaps the best-known historical attraction in Kinsale, Charles Fort, is on the road just beyond Summercove. It is open all year, and regular guided tours are available. Charles Fort is one of the finest surviving examples of a 17th Century star-shaped fort, and much of the construction begun in 1678 remains. The fort has two enormous bastions overlooking the estuary, and three facing inland. Within its walls were all the barracks and ancillary facilities to support the fort’s garrison. The fort continued in military use until 1922.