Massive, unfinished broadcasting station stands as a monument to the fall of communism.

The Grand Mall in Varna hosts one of the biggest collections of Soviet-era paraphernalia in Bulgaria.

These natural cliffs look like they are a part of an old castle complex.

"Holy Wisdom" overlooks the city that became its namesake.

Mysterious standing stone formations looks like a petrified forest.

UNESCO-protected ancient burial ground.

An 11th-century mountaintop fortress that played a crucial role in Italy's papal wars is now a vacation rental.

The mark of the Devil's horns on a marble column in Milan.

This curious building hides eclectic details like medieval gargoyles alongside naked angels and Art Nouveau mosaics.