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
Aspen Institute Wye River Conference Centers section - Wye Woods - is now closed and is being offered for sale.) In 1995 the Conference Center was the site for negotiations between Israel and the Palestine Authority which resulted in the Wye River Memorandum. Since 1998, the Wye River Group on Healthcare has conducted policy meetings on retreat there. Elián González and his father stayed there briefly in 2000. Beginning in September 2008, and meeting quarterly through December 2009, The Aspen Philanthropy Seminar–Washington, DC, convened a small group of philanthropists at the Center. The River House facility was originally developed in 1987 as a specialized high-tech conference