5. Hotel Castello Della Castelluccia, Rome, ItalyThe Castello della Castelluccia, a renovated 11th century castle described by some guests as something out of a fairytale. It has been the home to many aristocratic families, including this Orsinis, the Mutis, the Odelskanis, and operatic tenor Francesco Marconi.
But this legacy has left its shadows; it is said to be haunted by three ghosts, possibly including the mad Emperor Nero who wanders through the gardens, and guests have reported seeing spectral horses passing by in the night.