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Portchester Castle is a medieval fortification situated on a peninsula in Portsmouth Harbour, Hampshire, built within the walls of a Roman fort. The castle was established in the late twelfth century as a royal fortress, with the rectangular keep constructed under Henry II around 1160 to 1170. The structure comprises a substantial stone keep and residential ranges enclosed by the reused Roman fortification walls, which date from the third century and represent one of the best-preserved examples of late Roman military architecture in Britain. Portchester served as an important administrative and military centre throughout the medieval period, and the site retains significant archaeological and architectural evidence of both its Roman and Norman phases.
Portchester Castle is a scheduled monument protected by Historic England under reference 1015698. View the official record →
Portchester Castle is a medieval fortification situated on a peninsula in Portsmouth Harbour, Hampshire, built within the walls of a Roman fort. It is designated a Scheduled Ancient Monument by Historic England (NHLE) under reference 1015698.
Portchester Castle is a Scheduled Ancient Monument, legally protected by Historic England (NHLE) — the body responsible for designating and safeguarding heritage sites in England. The official designation reference is 1015698.
Several scheduled monuments lie within 10 km, including Long Curtain, King's Bastion and Spur Redoubt (5.5 km), Gunboat Traverser System (5.6 km), No 1 Battery, Stokes Bay Lines (6.7 km).
Aubrey generates in-depth historical research for any address in the UK — drawing on scheduled monument data, Domesday records, Roman heritage, PAS finds and medieval history to reveal the complete story of a landscape.
Research the area around Portchester Castle