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Castell Dinefwr

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 & prices

Opening times

1st April - 31st March 10am–4pm

Last admission 30 minutes before closing

Closed 24, 25, 26 December and 1 January

Visitor information

Pay and Display car park icon

Pay and Display car park

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

Cadw members are able to park free of charge, Cadw members will be required to show a valid membership card on arrival.

(There is an admission charge to enter Newton House).

Dogs welcome icon

Dogs welcome

Dogs on short leads welcome to access ground floor levels of the site.

Drone policy icon

Drone policy

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

No smoking icon

No smoking

Smoking is not permitted.

Directions

Google Map
Road: By A483, A476, or B4300
Rail: 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.

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