Hidden deep in the Guatemalan jungle is a turquoise paradise of natural pools, caves, and waterfalls.

A secret climbing tree hides along the side of a Costa Rican road.

In Costa Rica's cloud forest, the roots of a woody ficus create a botanical bridge.

Costa Rican accommodation resembles a crash site, but with a nice balcony.

The sister plane of the C-123 shot down during the Iran-Contra Affair has found a new purpose in retirement.

Once the foundation for a mansion, these ruins now offer amazing panoramic coastal views.

Where dogs like the rare "Fire-Tailed Border Cocker" run free on the mountainside.

This Costa Rican topiary park is a surreal garden of unearthly delights.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

Sloth rehabilitation center in the jungle of Costa Rica.

A legendary tree towers within its own vibrant sanctuary.

Alexander Hamilton’s creation caused quite a bit of controversy.

The abandoned coal loading dock is a canvas for unsanctioned art.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Where America's first doomsday cult awaited the end of the world.

A layered tribute to the work of mosaicist Isaiah Zagar.

World's first "penitentiary," meant to be humane, drove men insane.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Dedicated to the art of hunting, with juxtapositions of contemporary art.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.