Qatar's oldest market can trace its origins back more than a century.

The building is a gigantic piece of art inspired by the shape of a desert rose.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

This unusual piece of Renaissance art depicting the bodily horror of crucifixion and skin disease may have been inspired by fungus-induced hallucinations.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

Paris' linguistic guide to the international language of, yes, love.

World's largest barrel containing an inn.

A ruined castle stands atop a hill surrounded by dragon lore.

Fantastic views and thousands of love locks.

A university observatory dome painted like the beloved "Star Wars" robot.

It's good luck to be mocked by this monkey.

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

The prototype for all Nazi concentration camps.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

Secret North Korean passage discovered below the world's most dangerous border.

Home to more than 13,000 pieces of war memorabilia and military equipment.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

A whimsical bridge adorned with decorative dragons.

Cozy basement bar sports an inventory of over 2,000 beers.