Signposted 1.5km northeast of Muckross House, this well-preserved ruin (actually a friary, though everyone calls it an abbey) was founded in 1448 and burned by Cromwell's troops in 1652. There's a square-towered church and a small, atmospheric cloister with a giant yew tree in the centre (legend has it that the tree is as old as the abbey). In the chancel is the tomb of the McCarthy Mòr chieftains, and an elaborate 19th-century memorial to local philanthropist Lucy Gallwey.