One destination you might consider adding to the list is Drimnagh Castle, one of the five most haunted castles in Europe.
New research by Ubuy has examined tourist reviews and descriptions on TripAdvisor, which include the word 'haunted' in relation to the structures.
Overall, they found five cities containing eerie castles, with Drimnagh Castle coming in at number five, with many visitors reporting experiences of the supernatural kind when they were there.
It's said the building is haunted by Eleanor Barnwell, who is roaming the halls in search of her first love.
Fourth place was awarded to Gravensteen Castle in Ghent, Belgium which was once used as a torture and interrogation site.
That was beaten out for third place by Spilberk Castle in Czech Republic, which could be home to evil spirits.
The Larnaka Medieval Castle in Cyprus sits in second place and dates back to the 12th century.
The castle which has been marked as the most haunted one in Europe by tourists is the Castello Sforzesco in Milan, with ‘the Veiled Lady’ just one of the many apparitions said to live on the castle’s grounds.
