3. Dunluce Castle
If castle mystery is more your speed then the coastal Dunluce Castle in Northern Ireland should top your list. The medieval castle sits on a clifftop along the remote northern coast. The ruins on the site are said to be haunted by the ghost of a woman who died there, and there are mythical tales about fairies and fierce battles that took place on the site.
4. Bunratty Castle
The Bunratty Castle is one of the best castles for bringing the medieval times to life. The castle was once part of a Viking trading camp in 970. It has been beautifully restored to its mostly original condition and houses one of the most extensive collections of medieval furniture in Ireland.