Llanarthney can be found 7 miles, 12km, to the east of Carmarthen in the county of Carmarthenshire, South Wales. It sits on the banks of the River Gwynon and just south of the river Towy, the longest river flowing entirely through Wales. The Towy is popular with anglers for its excellent salmon and trout fishing.

Situated in Llanarthney is the National Botanic Garden of Wales, which attracts many visitors throughout the year. The garden includes a tropical house, Japanese garden, Mediterranean garden, Wild garden, a Roots and Shoots Adventure Zone for children, and three lakes which are home to an array of geese, ducks, coots and moorhens.

However, the main attraction is the Great Glasshouse, which sits quietly in the centre of the garden. It may look like a huge bubble has just landed in the garden, but the glasshouse is in fact a huge greenhouse housing plants from six areas of the world: the Mediterranean Basin, Chile, California, Australia, the Canary Island and South Africa. An art gallery can also be found in the garden.