ballynahow castle

This is one of the few castles in Ireland which is round. It was built by the Purcells in the 16th century. The walls splay at the bottom. Of the two ceilings which are preserved, one is a flat corbelled ceiling, the other is vaulted.
,br> The castle has 5 storeys, turrets, a broken fireplace in the 3rd storey, a 'murder hole' above the door to drop things on unwelcome intruders, and a small hole for muskets at one window.