Dinefwr Castle is a medieval fortress in south-west Wales. It stands on a hill above the River Tywi. The site is within Dinefwr Park.

Newport Castle stands on the west bank of the River Usk. It lies near the town centre in Newport. The remains date from the 14th century.

Lamphey Bishop's Palace is a medieval palace complex in Pembrokeshire. It served as a residence for the Bishops of St Davids.

Manorbier Castle is a medieval fortress in Pembrokeshire. It dates from the Norman period.

Cardiff Castle is a medieval and Victorian-era site in the centre of Cardiff, the capital of Wales.

Usk Castle is a partly ruined medieval castle in Monmouthshire, South Wales.

Built in the late 18th century, it was not constructed for military defence but as a decorative building with sentimental significance.

The site has been strategically important since the Iron Age, and the current stone structure dates mainly from the 12th century.

Laugharne Castle is beside the River Taf in Carmarthenshire, South Wales. It began as a Norman stronghold before being converted into a Tudor mansion.

Coity Castle is a medieval stronghold situated near Bridgend in South Wales. The site features a combination of Norman military architecture and later domestic buildings.

Caerphilly Castle is one of the largest medieval fortresses in Britain. It stands in the town of Caerphilly, South Wales. The castle is known for its concentric design and large artificial lakes.

Llandovery Castle is a ruined Norman fortification in Carmarthenshire, Wales.

Castell Coch is a 19th-century Gothic Revival castle built on medieval foundations. It stands on a wooded hillside near Tongwynlais, just north of Cardiff.

Ogmore Castle is a Norman fortification in the Vale of Glamorgan, South Wales.

Chepstow castle was vital in the defence of the Welsh Marches. Its strategic riverside position made it important for controlling trade and military movement.

Monmouth Castle is a partly ruined Norman stronghold in the historic town of Monmouth, South Wales.

Dryslwyn Castle is a ruined medieval fortress in Carmarthenshire, Wales. It stands on a steep hill overlooking the River Tywi.

Newcastle is a Norman castle ruin overlooking the town of Bridgend in South Wales.

Raglan Castle stands in Monmouthshire, South Wales. It is one of the last true medieval castles built in Britain. Construction started in the 15th century, making it later than many other Welsh castles.

Linked to King Arthur, Caerleon Castle was a likely medieval fort in Caerleon, South Wales. Likely to have been built by the Normans, or possibly a Welsh lord.