Sandown Castle was a Device Fort built at Sandown on the Isle of Wight by Henry VIII in 1545 to protect against the threat of French attack. Constructed from stone with angular bastions, its design was a hybrid of Italian military architectural thinking with traditional English military design. The site was raided by a French force that summer while the fortification was still being constructed. The site suffered from coastal erosion and the castle was demolished in 1631.