Garth lies between Beulah and Builth Wells in Powys, South Wales. In the past the village showed promises of becoming a spa town, with a small pump room, but it never reached the extent of nearby towns Builth Wells, Llangammarch Wells and Llanwrtyd Wells.
In Garth two ancient tombstones can be found, which are believed to be the graves of Welsh princes. On the Llanwrtyd Road visitors can find Llanlleonfel Church, where Sarah Gwynne married Charles Wesley, the English leader of the Methodist sect.