Abandoned 12th Century Irish Castle
McDermott’s Castle is located on an island in the southeastern corner of Lough Key in Roscommon, Ireland. But the 12th century fortress was practically destroyed by a fire in 1184 when lightning struck it. Eventually, the McDermotts decided to build another castle, but when the family lost the island, they were forced to abandon the castle as well. And the structure has remained abandoned except for that time in 2014 when the castle was used on a TV series named “Moone Boy.”