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
Wye River (plantation) Wye River (plantation) The Wye River plantation, or "Wye Hall" was the Eastern Shore of Maryland home of William Paca, constructed in 1765, and extensively renovated in 1790 by John Paca, with Joseph Clark as architect, at a cost of $20,000. He gained ownership of the property in Queen Anne's County, Maryland, through his wife, Mary Chew. John Beale Bordley and Margaret Chew inherited the other half of Wye Island. William Paca is buried at the family cemetery there. The Paca residence burned down in 1879. The University of Maryland, College Park conducted archeological work there. "Wye Hall" was built