A prehistoric landscape hidden in the cliffs of Maha'ulepu.

A Hawaiian stairway to heaven—that you can't climb.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

Watch the newest land on the planet form before your eyes.

A true treehouse near Hawai'i Volcanoes National Park.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

Atop this media building, two hives containing more than 30,000 bees keep the surrounding area vibrant.

A celebrity from the late Cretaceous period.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

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

The oldest certified bowling alley in the United States is in the basement of this century-old bar.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

The historic Masonic Lodge in which the first-ever female Mason was initiated.

The narrowest street in Paris.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

The oldest stone house in Paris was built by its most famous alchemist.

A snake farm famous for its venemous varieties.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

The only international border marker within the United States.

A medieval castle in the middle of rural Texas.

Scale replica of China's ancient terracotta tomb warriors and Forbidden City are the side project of an eccentric millionaire.