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
Hay-on-Wye Hay-on-Wye Hay-on-Wye ( or just "Y Gelli"), often abbreviated to just "Hay", is a small market town and community in the historic county of Brecknockshire (Breconshire) in Wales, currently administered as part of the unitary authority of Powys. With over twenty bookshops, it is often described as "the town of books", and is both the National Book Town of Wales and the site of the annual Hay Literary Festival. The settlement's name is first referred to between 1135 and 1147 as "Haya"; in 1299 the name of "La Haye" is used. By the 16th century it was simply called "Hay",