Llanymynech is a village straddling the border between Powys, Wales, and Shropshire, England, about 9 miles (14 km) north of the Welsh town of Welshpool. The name is Welsh for "Church of the Monks". The village is on the banks of the river Vyrnwy, and the Montgomery Canal crosses through it.
The border runs for the most part down the centre of the village's main street, with the eastern half of the village in England and the western half in Wales. The border also passed right through the now closed Lion pub, which had two bars in Shropshire and one in the former Welsh county of Montgomeryshire. At one time Welsh counties were referred to as "wet" or "dry" depending on whether people could drink in pubs on Sundays. When Montgomeryshire was dry it was legal to drink on Sundays in the two English bars of the Lion but not the Welsh bar. Two of the remaining open pubs in the village are entirely in England and the third is entirely in Wales.