St Teilo’s stands at the centre of Llandeilo, on a monastic site founded by the 6th-century saint who gives the town its name. The early clas here grew important enough to be the seat of a bishop-abbot, and a famous illuminated Gospel Book of St Teilo was once kept at the church. The present building is a Victorian rebuild on the old ground. Llandeilo station is about half a kilometre to the north-east, down towards the Tywi.