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Visitor Notice

Due to concerns over the spread of Coronavirus and the well-being of our visitors, all Cadw sites with staffed visitor centres will be closed to the public until further notice. Please check the Cadw website for further updates.


Fragmentary – yet evocative – remains of a castle laid low by conflict

Founded in the 13th century on an isolated hill in the verdant Tywi Valley, Dryslwyn was once an important seat of the ancient south Wales kingdom of Deheubarth.

Not much is known about its early history, but in 1287 it was the scene of a significant conflict between Welsh and English forces. In response to an uprising by Welsh lord Rhys ap Maredudd, 11,000 English troops were dispatched to lay siege to the castle. The conflict lasted two weeks as siege engines and sappers (soldiers with engineering skills, including tunnelling) chipped away at the fortress’s defences. The attackers eventually brought down a large section of the walls and the castle fell into the hands of the English crown.

Opening times

Daily 10am – 4pm

Last admission 30 minutes before closing

Closed 24, 25, 26 December and 1 January

*Due to recent heavy rainfall, Dryslwyn Castle is currently closed; our conservation teams are working to restore the area and we’ll update this page as soon as we can.

Check our Find a place to visit page to discover one of our other 129 sites to visit.


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Car park icon No drones icon No smoking icon

Public car park opposite main entrance with 15 spaces, no dedicated disabled parking bay.

Cadw do not allow drone flying from or over its guardianship sites, except by contractors commissioned for a specific purpose, who satisfy stringent CAA criteria, have the correct insurances and are operating under controlled conditions.

Smoking is not permitted.


B4297, from the A40(T) or the B4300
Ffairfach 9.5km/5.7mls

Postcode SA32 8RW

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