Lakeside Ross Castle dates back to the 15th century, when it was a residence of the O'Donoghue family. It was the last place in Munster to succumb to Cromwell's forces, thanks partly to its cunning spiral staircase, every step of which is a different height in order to break an attacker's stride. The castle is a lovely 3km walk or bike ride from the pedestrian park entrance; you may well spot deer along the way.
