Eons old volcanic activity created one of the most stunning rock formations in the United States.

Exotic feline breeding compound and conservation center.

A hand-built folk art installation covered with messages of God's love.

Towering basalt columns, a creation of fire and ice.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

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

The most powerful waterfall in all of Europe.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

These ruins in Volvi were once at the intersection of the Eastern and Western Worlds.

California's own majestic geyser is powered by a subterranean volcano.

A Kansas grassroots sculptor decorates the local roadways with his sculptures made from found objects.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

Tubing through a cave lit with glowworms is a magical underground experience.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

An Adirondacks museum housed in the former studio of Marcella Sembrich, the 19th century opera star most famous for her role of Mimi in "La Boheme."

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

What began with a single, 357-pound chunk of the Canyon Diablo meteorite grew to be an impressive collection. 

The first evidence of some of the Earth's earliest life was found in this fossilized undersea grotto.

The "Seinfeld" diner.

Five acres of divinely inspired folk art.

Where the Great Wall of China meets the sea.

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