The Rock of Dunamase is a rocky outcrop in the townland of Park or Dunamase in County Laois.
The rock, 46 metres (151 ft) above a flat plain, has the ruins of Dunamase Castle, a defensive stronghold dating from the early Hiberno-Norman period with a view across to the Slieve Bloom Mountains. It is near the N80 road between the towns of Portlaoise and Stradbally.
The 'Ballycarbery Castle' seen in Leap Year is really a combo of the Rock of Dunamase and some CGI.
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Amy Adams, Matthew Goode
When yet another anniversary passes without a marriage proposal from her boyfriend, Anna decides to take action. Aware of a Celtic tradition that allows women to pop the question on Feb. 29, she plans to follow her lover to Dublin and ask him to marry her. Fate has other plans, however, and Anna winds up on the other side of the Emerald Isle with handsome, but surly, Declan -- an Irishman who may just lead Anna down the road to true love.