It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

Dr Barnes' $25 billion private collection of art and arboretum.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

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

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

A near tragic event on this bridge helped inspire the classic film "It's a Wonderful Life."

Thousands of turbines whir at at the origin of North American wind power.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

"Only the devil could play golf here."

Dramatic river bend surrounds a natural red-rocked pedestal.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

A Christian monastery stands on what was once a holy Incan temple.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

The largest geyser field in the southern hemisphere is a spectacular sight.

The largest stone moai on Rapa Nui.

The world's most remote airport.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The land is home to swimming ponies and a legendary 18th-century treasure.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

Built by the patriotic residents of Boonsboro in a single day.