Escape to the Hills for a Bed & Breakfast or Dinner, Bed & Breakfast break in the heart of Glendalough. Glendalough is in the Wicklow National Park which is situated south of Dublin on 20,000 hectares of mountain scenery with many roads crossing through it. A lot of the National Park has no facilities and is left mostly untouched and natural. Glendalough has many way marked trails/routes from easy to difficult.