The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

The place where World War I began.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

In Egypt's expanding metro area, many of the neighbors are dead.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

The prototype for all Nazi concentration camps.

Go surfing on this urban wave, "hacked" by local surfers.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

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

The footprint of a frustrated devil in Munich's Cathedral.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

The fairy tale castle of the "fairy-tale king."

A small but immensely extravagant palace built by the "Night King."

The stones of this formerly witch-obsessed castle were used to build a church.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

This lurid German fountain plots the sad course of marriage from dating to death.

The "feral child" who appeared in Bavaria in the 19th century remains as much a mystery as his unsolved murder.

A collection of 4,000 thimbles that's more versatile than one might imagine.

This automated sculpture of two men peeing will spell out text messages with their micturition.

Less a museum than a bizarre fantasy world created by artists and engineers.