Hay-on-Wye the north-easternmost tip of the Brecon Beacons National Park, just north of the Black Mountains. The town is just on the Welsh side of the border with Herefordshire, England, here defined by the Dulas Brook. Where the brook joins the River Wye just north of the town, the border continues northwards along the river. The Wye was the boundary between the former counties and districts of Radnorshire and Brecknockshire. The adjacent village of Cusop lies on the English side of the Dulas Brook. The nearest city is Hereford, county town of Herefordshire, some to the east. The Royal Mail depot
The Kymin The Kymin The Kymin, (), is a hill overlooking Monmouth, in Monmouthshire, Wales. It is located approximately one mile east of Monmouth, on the eastern side of the River Wye and adjacent to the border with the Forest of Dean and England. The summit of the hill, about 800 feet above sea level, is known for its neo-classical monuments, the Roundhouse and the Naval Temple, built between 1794 and 1800. The site is a designated Area of Outstanding Natural Beauty (AONB) and is owned by the National Trust for Places of Historic Interest or Natural Beauty. The Roundhouse was built