The Pope’s secret escape route.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

Erotic art covers the walls of the largest ancient pleasure palace.

The walls and streets of the ancient city are peppered with penises.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

The only presidential monument to display a late POTUS's actual casket.

This steamer is known as "The ship that built Cleveland."

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

The only depiction of Abraham Lincoln holding a weapon, and the names of all 9,000 Cuyahoga veterans of the Civil War.

But did the famous feminist and abolitionist ever really say those iconic four words?

This massive airship factory is so large that it has its own indoor weather.

The spectacular collection of one of the world's best woodcarvers.

Ohio's 19th-century communist micro-society.

The 25th President's marble casket can be visited in this classical Ohio tomb.

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

A museum dedicated Germany's favorite drink and most well-known festival.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

The prototype for all Nazi concentration camps.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.