Photo of Chepstow Castle, a ruined castle in the Wye Valley, Monmouthshire, south east Wales.

Chepstow CastlePhoto Krisztina Papp / Unsplash

Castles & strongholds in MonmouthshireMonmouthshire, Wales

14 castles in the Albion Guide across Monmouthshire — see the full castles directory, or everything to explore in Monmouthshire.

Photo of Chepstow Castle, a ruined castle in the Wye Valley, Monmouthshire, south east Wales.

Chepstow Castle

Britain's oldest stone castle above the Wye.

Chepstow

Photo of White Castle, a ruined castle near Llantilio Crossenny, Monmouthshire, south east Wales.

White Castle

Moated Norman castle in the Monmouthshire hills.

Llantilio Crossenny

Photo of Raglan Castle, a ruined castle near Bettws Newydd, Monmouthshire, south east Wales.

Raglan Castle

One of the last great castles built in Britain, its hexagonal Great Tower slighted after a long Civil War siege.

Bettws Newydd

Photo of Monmouth Castle, a ruined castle in Monmouthshire, south east Wales.

Monmouth Castle

A medieval castle in Monmouthshire.

Monmouth

Photo of Skenfrith Castle, a ruined castle in Monmouthshire, south east Wales.

Skenfrith Castle

A medieval castle in Monmouthshire.

Skenfrith

Photo of Abergavenny Castle, a ruined castle in Monmouthshire, south east Wales.

Abergavenny Castle

A medieval castle in Monmouthshire.

Abergavenny

Photo of Usk Castle, a ruined castle in Monmouthshire, south east Wales.

Usk Castle

A medieval castle in Monmouthshire.

Usk

Castell Rhaglan

A medieval castle in Monmouthshire.

Bettws Newydd

Grosmont Castle

A medieval castle in Monmouthshire.

Grosmont (Grosmont)

Caldicot Castle

A medieval castle in Monmouthshire.

Caldicot

Cas Troggy Castle

A medieval castle in Monmouthshire.

Penhow

Dinham Castle

A medieval castle in Monmouthshire.

Shirenewton

Llangibby Castle

A medieval castle in Monmouthshire.

Usk

Llanvair Castle

A medieval castle in Monmouthshire.

Caerwent