This medieval Augustinian Priory was dedicated to St Mary and St Thomas the Martyr. It is found on the outskirts of Haverfordwest, next to the River Western Cleddau. Thought to be 13th century, it was once owned by the brothers of the Bishop of St David’s.
The intriguing remains consist of standing walls and flagstones floors. Some of the more outstanding architectural finds are housed in Haverfordwest Museum. They once formed the Chapter House, Cloister, Priory Church and living quarters of the Canons Free entry. Guide dogs only. Much of the site is accessible by wheelchair, with lawns, gravel and paving stones. Managed by Cadw.