This abandoned fort is said to be the most haunted place in India, so much so that entry is prohibited after sunset.

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

Ruins of a German Castle on top of a towering stone pillar.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

A submerged archeological park still holds the wonders of a Roman Sodom.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

An Aztec snake god has taken the material form of an apartment complex.

A battle between nature and architecture in the Cambodian jungle.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A seemingly endless landscape of pure salt stretches far across Bolivia.

On the Oregon coast there is a natural hole that seems to be draining the sea.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Hot springs monkey spa in the middle of Hell's Valley.

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

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

The world's largest wooden structure.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.