Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

Enter the Forest of the Elves.

A Belle Epoque bordello turned into a themed love hotel.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

This charmingly homemade amusement park has been growing for 40 years.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

A display of magnificent stained glass windows is the first exhibit of its kind.

Macabre astrological automaton clock dating to the late 1400s.