The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

The seamy, underground secrets of Portland's criminal past.

An enormous, inside-out glass globe built in 1935.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Macabre astrological automaton clock dating to the late 1400s.

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

An ancient capital city that dates back 3,000 years old and harbors many surprises.

A church of bones, decorated with 40,000 human skeletons.

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

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

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Thousands of well-dressed mummies below a monastery.

Pompeii's less famous neighbor is still revealing her secrets.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The fairy tale castle of the "fairy-tale king."

A diverse, expansive nature preserve in northeastern Kansas.