Llansadwrn is located in the county of Carmarthenshire, South West Wales. It sits north of the A40, between Llandeilo and Llandovery. The river Dulais passes 2.5km to the east before joining the river Towy in Llanwrda, 3km east of the village.
Llansadwrn church, located in the heart of the village, is a typical Welsh double naved church. The church is dedicated to St Sadwrn.
The impressive ruins of Talley Abbey (Tal-y-Llychau) are located some 5 miles west of Llansadwrn. The abbey was founded in the late 1180s by Lord Rhys, and instead of being home to Cistercian nuns it was in fact an abbey for Premonstratensians, also known as the White Canons.
Today only the abbey church and a quiet cemetery remain among the ruins of the abbey. But what ruins! The imposing remains of the central crossing tower still rise to a height of some 85ft (25.7m), completely dominating the site and the surrounding area.
The abbey was built near the head of two lakes, Upper Talley Lake and the Lower Talley Lake from which the monks would catch their fish.