A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

Where thousands of slaves passed through the "Door of No Return."

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

Gargoyle head that brings good luck.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

Catering to broken dolls for almost 200 years, this repair shop is now a charnel house of doll parts.

The world's oldest bookshop still in operation.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

The site of the first battle of World War II.

Europe's official "zero-level," the equator of elevation.

A public urinal so pretty, it was declared a national monument.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

An encyclopedic collection of mammal penises.

Medicinal spa created with the discharge from a geothermal energy plant.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Tiny memorials honor individual victims of the Holocaust.

The final resting place of many of Germany's most famous communists.