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Grosmont Castle is a Norman stronghold situated in the valley of the River Monnow in Monmouthshire, Wales, originally constructed in the early twelfth century as part of the Anglo-Norman expansion into South Wales. The castle comprises a substantial stone keep built upon a motte, surrounded by a bailey with defensive walls, representing a transitional phase between motte-and-bailey and stone fortification architecture. The keep, constructed in the late twelfth century, is distinguished by its cylindrical form and substantial masonry, reflecting contemporary military design. The site served strategic importance throughout the medieval period, commanding a key position in the defensive network of the Marcher lordships, and substantial ruins of both the keep and curtain walls remain visible today.
Grosmont Castle is a scheduled monument protected by Cadw under reference MM007. View the official record →
Grosmont Castle is a Norman stronghold situated in the valley of the River Monnow in Monmouthshire, Wales, originally constructed in the early twelfth century as part of the Anglo-Norman expansion into South Wales. It is designated a Scheduled Ancient Monument by Cadw under reference MM007.
Grosmont Castle dates from the medieval period, and is classified as a castle. It is one of over 32,000 scheduled monuments protected across Britain.
Grosmont Castle is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is MM007.
Several scheduled monuments lie within 10 km, including Grosmont Churchyard Cross (0.2 km), Iron Age farmstead enclosure on Garway Hill (3.7 km), Churchyard cross in St Michael's churchyard (5.3 km).
Aubrey generates in-depth historical research for any address in Britain — 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 Grosmont Castle