Royal Hospital Haslar, built in the 1750s and opened in 1762, is a remarkable piece of Georgian architecture: a vast quadrangular building in red brick with a central chapel, designed to house the sick and wounded sailors of the Royal Navy. It was the largest brick building in Britain when completed and remained the main naval hospital for over two centuries.
The hospital closed as an NHS facility in 2009, and the building is now largely converted to private housing. The exterior quadrangle and grounds can still be viewed, and the scale of the place — the long wings, the chapel dome, the arcaded walkways — gives a vivid sense of the ambition the Navy brought to caring for its men. The cemetery in the grounds contains graves of sailors from almost every conflict involving the Royal Navy from the 1760s onward, including prisoners of war who died here from various national navies.