Dún Aonghasa

Dún Aonghasa - Credit: Wikimedia Commons

(unofficial anglicised version Dun AengusPlacenames Database of Ireland) is the best-known of several prehistoric hill forts on the Aran Islands of County Galway, Ireland. It lies on , at the edge of a cliff. Read more on Wikipedia

type: ancient site
date from: 1100

Source: en.wikipedia.org