A striking symbol of the Bulgarian capital.

A collection of art from Bulgaria's time as a communist state.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

An abandoned outdoor movie theater in the Sinai desert.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.

The world's largest bamboo labyrinth is a living demonstration of the plant’s immense potential.

A medieval weapon rumored to have been used by the brilliant poet himself.

A line of abandoned, alien-like fortresses dot the mountains of North Italy.

A madman's personal garden filled with 1,000 sculpted heads.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

A young Italian couple has been locked in an embrace for over 6,000 years.

The bomb-ravaged remains of of a colossal Neptune.

This abandoned Brutalist treehouse is a hidden architectural relic.

An ancient artistic garden parlor full of hidden water wonders.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Virgil's many-mouthed gateway to the underworld.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.