The yawning maw of this pagan visage is said to bite off the hands of liars.

A sculpture serving as an homage to Pope John Paul II.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

This curious, round temple is the oldest still-standing marble building in Rome.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

Architectural monsters are devouring this palace's every door and window.

Monasteries on rock pillars, once accessible only by frayed ropes.

A tiny church on a man-made island in the Adriatic.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

The oldest arboretum on the Dalmatian coast doubles as the gardens of Kings Landing in "Game of Thrones."

Longest fortress system anywhere in Europe.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

Gargoyle head that brings good luck.

This 135-year-old weather station studied the effects of the climate on human health.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

Yugoslavia's biggest underground airport lies in ruins.

A musical instrument played by the sea.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A relic from the Industrial Revolution got a second life as a contemporary performing arts space.

Slovenia's first mosque is a striking mix of Islamic and modernist architecture.