Llangadog sits between the river Sawdde and the river Bran in the county of Carmarthenshire, South West Wales. The Bran and Sawdde join the Towy just half a kilometre west of Llangadog. Llangadog lies on the western edge of the Brecon Beacons National Park is surrounded by beautiful rolling hills and pasture with stunning views towards the Black Mountain.

Llangadog castle, also known as Meurig castle, lies to the south east of the village. Originally it was a motte and horseshoe-shaped bailey settlement built to protect the ford at Glanrhyd, and one can imagine the wooden castle on its impressive motte and bailey. It is believed to be have been built early in the 12th century, as it is referred to in 1203, 1208 and 1209, when it was captured during English-Welsh struggles.

Visitors can see the castle from a public footpath, or alternatively you can keep to the road.

Llangadog Church is dedicated to the fifth or sixth century saint Cadog or Catwg. It is a Grade 2 listed building which has, in one form or another stood sentinel over the lives of the inhabitants of Llangadog for over 1400 years. The church is the centre for many parochial events during the year such as parish fetes, school and college visits, and is indeed a focal point for many activities in the area including being the headquarters of a mixed voice choir and well-established symphony orchestra.