The River Usk flows through the village as does the Monmouthshire and Brecon Canal.

[2] The stone bridge across the river dates from approximately 1700 and is a Grade I listed building.

The remains of what may be a medieval reeve's house have been discovered in the course of archaeological excavations in the centre of the village.

[8] The land was then in the ownership of the Earls of Worcester until the nineteenth and early twentieth century when much of Llangynidr was part of the Glanusk Park estate.

For example, in his 1893 book 'Wales and her language', John E Southall, reports that over 60% of the population of Crickhowell and Llangynidr spoke Welsh, although the town was only a few miles from more anglicised Abergavenny.