Aghadoe (Irish: Achadh an Dá Eo) is a large townland overlooking the town and lakes of Killarney in Ireland. Officially it is also a parish, although the parish is larger than the area normally associated with the name. The area is famous for its views of the lakes and islands, including Innisfallen Island. The ruins of 13th century Parkavonear Castle and of "Aghadoe Cathedral," an old Romanesque church in ruins, make the spot popular with tourists and archaeologists.