Doonagore Castle - Credit: Wikimedia Commons
Doonagore Castle is a round 16th-century tower house with a small walled enclosure located about 1 km south of the coastal village of Doolin in County Clare, Ireland. Its name may be derived from Dún na Gabhair, meaning "the fort of the rounded hills" or the "fort of the goats". Doonagore Castle is at present a private holiday home, inaccessible to the public. Read more on Wikipedia
Source: en.wikipedia.org