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Much fought-over seat of the kingdom of Deheubarth

Perched in a commanding hilltop position above the Tywi Valley, Castell Dinefwr occupies a similarly significant position in Welsh history. In the 12th century, the fortress was in the possession of The Lord Rhys, ruler of the ancient south Wales kingdom of Deheubarth. His reign saw a rare period of peace and stability that led to a flowering of Welsh culture, music and poetry.

Sadly, it was not to last. After Rhys’s death, conflicts over succession led to turbulent years as the Welsh princes fought amongst themselves and against the English. Dinefwr eventually fell into English control in 1287 and remained there for centuries, despite Owain Glyndŵr’s attempt to wrest it back during his uprising of 1403.

Opening times

Daily 10am–5pm

Last admission 30 minutes before closing

Closed 24, 25, 26 December and 1 January


Category Price

Car parking charge: £5


Pay and Display car park icon Drone policy icon No smoking icon

The car park at Castell Dinefwr is owned and managed by the National Trust

Car parking charge: £5

This charge applies to all Cadw members and non-members. 

Please read our policy information about flying drones at Cadw monuments: read the guidance

Smoking is not permitted.


By A483, A476, or B4300
Llandeilo 2.5km/1.5mls

Postcode SA19 6RT

For further information, please contact: Traveline Cymru on 0871 200 2233 or National Rail Enquiries on 08457 48 49 50.