Two mermen, eternally spitting into each other's mouths.

This impressive Boston holy house is the American mecca for Christian scientists.

A labyrinth of clothing, electronics, and other counterfeit items.

This former luxury resort in Kaua'i is now an abandoned relic.

This blowhole is supposedly caused by a trapped monster.

A once-glowing grotto at the bottom of Waikapalae Wet Cave.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

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

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

This "thrice-cursed" island is allegedly home to Captain Kidd's lost treasure.

A lone tower rises above the cliffs in a city park, offering fantastic views of the Connecticut landscape.

This historic park site contains the last remnants of a once bustling canal system.

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

This mesmerizing kinetic sculpture blossoms endlessly in the breeze.

Every year, the colorful murals of Montreal get a complete makeover.

One of America's oldest private membership libraries was long one of New Haven's best kept secrets.

The vaulted ceiling is home to a scurry of “squirrelgoyles.”

This crumbling industrial fortress has attracted daredevils, filmmakers, and historians.

This 17th-century house was once the trading hub for two prominent Canadian fur barons.

This exuberantly curated landscape is one of the largest sculpture gardens in Canada.

Two thirds of this Montreal neon icon has survived to flash another day.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.