Where many battles were won and lost Clough Outer Castle is less than 24km from Hotel Kilmore. A ruined circular castle situated on a small island in Lough Oughter. It was built by the Anglo-Normans in the early 13th century but was soon captured by the O' Reilly clan, the Irish rulers of east Bréifne. Owen Roe O'Neill, leader of the anti-English revolt of the 1640s, died here in November 1649. Clough Oughter is a Marble Arch Caves Global Geopark site.
Lough Outer is regarded as the best inland example of a flooded drumlin landscape in Ireland and has rich and varied wildlife. Lough Outer is a popular angling lake and is also popular with canoeists and boating enthusiasts.
It is the perfect day out for all the family. A visit to the castle can be arranged by contacting the Cavan Adventure Centre who can organise a guided boat trip or you can take a canoe or kayak if you wish.