Naturally formed rock city in Poland.

An underground city of salt.

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

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

Elevated freight railway turned wildly successful urban park.

Over 12,000 hygiene oriented objects and exhibits.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

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

The "Prussian Versailles" that is as glorious today as when it was built.

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

The most visited, and possibly most controversial, museum in Germany.

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

When the imprisoned pope's remains were finally returned to the Vatican, his heart stayed behind in France.

Sky ships, planes, and portraits left as unique tokens of hope and thankfulness.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

For over 300 years this little carving has been the city’s good luck charm.

This bridge was constructed from the rubble of the infamous Bastille.

The mummified heart of Louis XVII, the lost dauphin of the French Revolution.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

There is a strange little carving of a person seemingly crushed by a pillar behind the remains of St. Thomas Aquinas.

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