Cave shrine on Monte Pellegrino.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

Haunting graffiti left by prisoners of the Spanish Inquisition.

Thousands of well-dressed mummies below a monastery.

Leveled by an earthquake, this Italian village is now preserved as a massive concrete art project.

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

This smaller cousin of the Forbidden City has gone from ancestral sacrifice to tourist's whispers.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Enormous statue of the Emperor of the Mongols.

Thanks to a spelling mistake this bizarre beaver-tiger hybrid became the symbol of a Siberian town.

Moscow's imposing monument to the Space Age.

Museum celebrating the achievements of the Soviet space program.

Immortal combat in a Moscow museum.

World's largest bell sits on the grounds of the Kremlin in Moscow.

Romania's triumphal arch looks out over Bucharest.

One of the most controversial statues in Romania is an emperor with no clothes.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

The hallucinogenic center of the ancient world.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

Fountain where visitors can earn a license to be mad.