Grennan Castle, County Kilkenny, in August 1987. A large strong rectangular thirteenth century Norman hall type castle. The long hall was on the first floor built over a series of vaults.
Sited on a raised platform beside the River Nore, it sits on an island when the river floods.
Grennan Castle controlled the upper limits of navigation on the river.
It was in reasonably good condition until the early 18th century when it was quarried for its cut stone.
It now provides shelter for local cattle, no doubt the continuation of a long standing tradition.