This Neapolitan exhibition hall grants weird and wonderful insight into the intricacies of human biology.

This monumental fountain has moved around the city multiple times.

This medieval city gate is now a blend of the past and the modern world.

An eerie, little-known Neapolitan museum filled with preserved human remains.

The burial place of an obscure North African saint was turned into a macabre body preservation factory for the 17th-century Neapolitan elite.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

Though it may look like a businessman's lost luggage, this case suspended under a highway bridge is actually a contemporary art installation.

A marvel of technology a century ago, this disused power station now offers a lovely glimpse into the industrial design of the past.

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.

A diminutive statue that was inspired by the sculptor's own daughter.

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

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

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

A 19th-century artistocrat's mansion, turned into a library, hidden in a modern library.

This historic little railroad runs through some of the most beautiful scenery in Germany.

Caves famous for the dragon-slaying saint who lived there.

This small museum displays a collection of outsider art and scale models of past "treatments" for mental illness.

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.