An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

Eat a tasty meal in the house where John Steinbeck was born.

An expansive and intricately restored mansion remains from over a century ago--and so do its ghosts.

Famously misunderstood wonder of the ancient world

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

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

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

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

Believed to hold the remains of Japan's most infamous fox spirit, this stone is said to kill those who dare approach.

An unexpected curiosity cabinet hidden within a department store in the Japan Post tower.

A Mysterious Masonic tomb in San Luis Obispo.