Lough Gur Prehistoric Site

Must-see attractions nearby: King John's Castle St Mary's Cathedral City Court House Plassey People's Park O'Connell Street St John's Cathedral

2000 B.C.); No. 7, a stone fort (eighth century); No. 8, an oval stone fort (Early Christian period); No. 12, a Neolithic burial place surrounded by a double earthwork, with a standing stone in the middle; No. 16, a burial mound with a circle of standing stones (c. 1500 B.C.); No. 17, a fine double stone circle with an earth rampart and a ditch (age uncertain); No. 22, a small stone circle of large slabs; No. 23, a crannog (originally an artificial islet, now linked to the shore); and No. 28, an imposing stone circle (c. 2000 B.C.), a cult site with an almost monumental entrance.

There are also two medieval structures, Bourchier's Castle (16th C.) and Black Castle (14th C.), and the ruined 17th C. New Church.