Wynnes Folly, is what remains from a structure built by Lord Hedley Wynne in the 1860’s to please his wife and paid for by increasing his tenants rent by up to 50%. Those who couldn’t find the extra money were evicted and shortly after this Wynne left Glenbeigh.
While World War I was in progress the castle and grounds were let to the British Military Command and used as a training centre for reservists. In 1921, Republican forces burned the castle to the ground and it was never rebuilt.