An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

One of the best places to see feral Colonial Spanish Mustangs in the United States.

This North Carolina store preserves a historic moment in America's movement for racial equality.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

With statues of Nelson Mandela and Harvey Milk this monument has been called the Mount Rushmore of California.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

A bizarre roadside attraction and the first instance of miniature golf in the world.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

At the base of the Golden Gate Bridge, a small sign basically begs for a high-five.

A huge musical instrument played by the ocean.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

A bit of retro transportation flair preserved in the world's largest department store.

Wine bottle sculpture with a ship's stateroom inside.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

On the Hudson resides one of the largest clocks in the world.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

Scary metal statues adorn some of the signature buildings of Burlington, VT.

A massive sustainable farm designed by the mastermind behind Central Park.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

The drama of nature in full effect in this Nevada State Park.