An unassuming secret door once led to a legendary watering hole.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

This Elizabethan hedge maze is one of only six in North America.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

One of the last Jazz Age "Wonder Theaters" in New York City.

A hollow cement depiction of time's inexorable effect on the human body.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Art and a pun, all in one.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

Hanging over one of Japan's "hidden valleys," these vine bridges must be remade every three years.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

Most famous work of one of Frank Lloyd Wright's sons.

This spectacular track has run continuously since 1882.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

A beautiful but toxic fountain of mercury.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.