The Cliffs of Moher, Ireland. The tower at the cliffs was built by Cornelius O'Brien, a descendant of Brian Boru, the High King of Ireland. From here one can easily view the cliffs, the Aran Islands, and Galway Bay as well as the Twelve Pins and the Maum Turk Mountains to the north in Connemara and Loop Head to the south.
Dettifoss Waterfall. Located on the glacial river Jökulsá á Fjöllum, nestled in Iceland's version of the Grand Canyon - Jökulsárgljúfur. With a flow of about 500 cubic meters per second at high flow, this 44m tall 100m wide monster is Europe's mightiest waterfall.