These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

On this tiny spot of land in the middle of Lake Titicaca the only ones who do the knitting are the men.

These ruined Incan mausoleum towers still bear carvings of sacred animals on their blocks.

The Uros people live on floating reed islands in lake Titicaca.

Death rituals and sacrifice inside a Peruvian megalith.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A natural gas leak provides a flickering flame beneath a waterfall.

The birthplace of America's favorite fruit-flavored mystery dessert.

This centuries-old tree tells an unusual tale of vegetation and fertility in the desert.

This beautifully historic Bahrain fortress might not be the most popular attraction around, but that might make it all the better.

This tiny patch of arid sand sits in one of the greenest states in the United States.

Outsider art meets paleontology at this roadside reptile repository.

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

The largest collection of historical roller skates in the world.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

This replica small town lets visitors take a stroll through the story of progress in the U.S. via thousands of Americana artifacts.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.