Cliffs of Moher (Cliffs of Moher in English, Irish Aillte Mhothair year, "Cliffs of Ruins") are sets of cliffs located on the town of Liscannor at the south-west of Burren in County Clare, Ireland. The cliffs are up to 214 m above the Atlantic Ocean on a length of 8 km. The tower O'Brien (O'Brien tower) was built in 1835, amid the cliffs by Sir Cornelius O'Brien to provide a vantage point for the many tourists who were already on the site. On a clear day you can see also t...