Zurich's evolution museum hosts a unique collection of skeletons among its natural history treasures.

"Gnome Chomsky" was once the largest gnome in the world, but is now simply tall for his kind.

A peaceful international sculpture garden in upstate New York.

Now the final resting place of prominent artists and musicians, it was originally founded to separate the rich from the poor in death.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Painstakingly built dioramas sit unnoticed in a Boston office building.

A tiny plaque marks the location of the water source that facilitated the birth of modern-day Boston.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

A dormant lightning machine equal to all the power in Russia.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

Whether you're up or down, the Elevator Museum is worth a stop.

Nondescript elevator doors open to reveal a stunning, surreal world.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A gallery of underwater art that can be visited by man and fish alike.

A Bibliophile's Dream.

Combination beer garden and music venue in the heart of Wicker Park.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

Artists and musicians now rule over this former rail station.

Traveling collection of amazing automata.

A hands-off space for graffiti artists to hone and display their skills.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

Hidden beneath the streets of London is a secret subway that only carried mail.