A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

Monasteries on rock pillars, once accessible only by frayed ropes.

If you've ever wanted to learn about the history of Asian fish balls, this Taiwanese museum has you covered.

These charming mailboxes became social media stars after a typhoon failed to topple them.

Visit this church that's shaped like a giant glass pump either to cater to women or to reference a tragic local tale. Or both.

An autonomous republic of Orthodox monks.

What was once thought to be a wellspring of unicorn bones is actually just a prehistoric burial site.

An elevator into the Baltic Sea.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

The world's largest church atop a political fault line.

In 1943 the British military took control of this village, telling residents they had to leave temporarily. The villagers were never allowed to return.

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.

A horse statue that receives constant makeovers from graffiti artists and locals.

A kindergarten shaped like a cat with a tail that's a slide.

A wall within the institution displays the names of 13,000 Jews who took refuge in the city during World War II.

An collection of Chinese propaganda posters from 1949 to 1979.

The world's largest wooden structure.

Mysterious Spanish catacombs of unknown origins.

The mysterious large white cross visible from the runway is a memorial to a massacre during Spanish Civil War.

An exact replica of a colossal Olmec head sits atop a pyramid within a Madrid traffic circle.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

One of the world's oldest universities houses an incredible collection of anatomical models, mummified body parts, and human bones.

The morbid items in this small and hidden museum are not for the weak stomached.