Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

A rare example of World War I trenches from the British front.

The shell of a medieval fortress offers commanding views of the area it once protected.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

The final resting place for the remains of 143 Habsburg royalty.

A collection of heirloom roses tucked in a spectacularly beautiful botanical garden on Lake Atitlan.

Mesoamerican monoliths and zoomorphic stones covered in royal visages, ancient mythology, and grand celestial events.

A devastated ruin in the south of Belize where British explorers claimed to unearth the Mitchell-Hedges Crystal Skull.

Legend says those who drink from this trickle of water are destined to return to Montserrat.

The legend associated with these ruins understates the splendor of the mansion that once stood here.

Nature took her revenge on the "Wickedest City in the World."

The final resting place of Christopher Columbus - or possibly someone else.

Storms, funding, and in-fighting have kept this Bermuda church from ever being completed.

One of the most accessible undersea plane wrecks in the world.

In paradise, feral pigs have claimed an island all to themselves.

This striking landscape in northern Vietnam contains both geological and archaeological wonders.

Thailand's distressed elephants find peace at this Chiang Mai sanctuary.

This ancient Silk Road outpost overlooking the Wakhan Valley is miraculously still standing.

A building facade covered with the statues of 11 giants of Tajik literature.

This fort dates back to 1588 and was colonized by the Portuguese, Dutch, and English and sits prominently on the Indian Ocean where azure water lap the coast.

The best place for scenic views of the DMZ and North Korea.

This Singaporean food-court stall was home to the world's cheapest Michelin-starred meal.

A patch of Philippines forest devoted to saving the lives of an emotionally sensitive species of googly-eyed primates.