Fort Charles, constructed between 1650 and 1660, is the first fort built in Port Royal, Jamaica. Originally named Fort Cromwell, it was later renamed to honor King Charles II. The fort was strategically positioned to guard the entrance to Kingston Harbour and played a significant role in the defense of the British colony. At its peak, Fort Charles housed a garrison of 500 men and boasted 104 guns. The fort is renowned for its unique ship-shaped design, with walls bordered by the sea on three sides. Over time, gradual silt buildup has left the fort fully landlocked today. Visitors can explore the well-preserved structure, view the rows of semi-circular gun ports, and learn about its rich history through exhibits and guided tours. The fort also houses the Giddy House, an artillery storehouse that was tilted during the 1907 earthquake, offering a fascinating perspective on the region's seismic activity.