This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

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

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

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This stunning French estate was so lavish that it landed its original owner in jail for the rest of his life.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

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

The prototype for all Nazi concentration camps.

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

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

The largest flower auction house in the world.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

A massive Montreal stadium that has seen nothing but trouble since its inception.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

The only surviving prototype for Buckminster Fuller's house of the future.

A wacky two-story folk-art assemblage of carved and found objects, with lights, motion, and sound now in need of financial support.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

A Beaux-Arts triumph rises from decades of decay to become the heart of a new innovation district.