Brimstone Hill Fortress National Park, Military fortress in Saint Thomas Middle Island Parish, Saint Kitts.

Brimstone Hill Fortress National Park covers over 38 acres on Brimstone Hill, about 250 m above the sea near the western coast of St. Kitts. Dark grey and brown stone and brick walls with crenellated tops enclose the Fort George Citadel and its pitched-roof buildings on the ridge; lower on the slope stands a separate roofless stone section. A paved road and stepped walkway climb to the fortifications.

Cannon were first mounted on Brimstone Hill in 1689, when the French under Jean-Baptiste du Casse used the height to take the English Fort Charles; the English under Sir Christopher Codrington retook it a year later and kept the hill as a fortress, with 49 guns by 1736. In 1782 the French under de Grasse and de Bouillé besieged it for a month and the garrison surrendered, but the Treaty of Paris returned St. Kitts to Britain in 1783. The British then strengthened the works, which never fell again; the fort was abandoned in 1853.

The fortress demonstrates British engineering skill and the labor of enslaved African people who built and maintained these extensive fortifications. Their stories and contributions are now part of the narratives shared at the site.

The citadel, Western and Eastern Places of Arms are reached from the main parking area by a steep walk up ramps and steps. The Magazine Bastion breached by the French in 1782, the Royal Engineers' Quarters and the Artillery and Infantry Officers' Quarters lie among the ruins. Allow time for the climb and carry water.

The fortress contains many cannons still aimed toward the horizon, remnants of its defensive purpose. From the citadel, visitors can see across to neighboring islands on clear days, revealing why this location was so strategically important.