Fort Cumberland

Fort Cumberland is a historic pentagonal artillery fortification built in Southsea to guard the entrance to Langstone Harbour on England's south coast. Originally constructed in 1747 and extensively rebuilt from 1782 to 1812, the fort dates from the Napoleonic era and stands apart from other Portsmouth fortifications. Since 1975, it has been under English Heritage's stewardship and now serves as the base for Historic England's Centre for Archaeology, housing research collections of international significance. This Grade II* listed building opens for pre-booked tours and during annual Heritage Open Days in September, offering visitors a glimpse into 18th-century military architecture and archaeology.