O'Brien's Tower is a stone observation tower built in 1835 by Cornelius O'Brien, a local MP, as a viewing platform for Victorian tourists. It stands at the highest point of the Cliffs of Moher (214 meters) and offers 360-degree panoramic views. From the top, you can see the Aran Islands, Connemara Mountains, and Galway Bay on clear days. The tower is included in the general cliffs admission.