Planned as the world’s first zero-carbon city, it had lofty ideals—but is only 5 percent completed and aiming for 50 percent carbon-neutral.

Mexico City's residents are being watched by this state surveillance headquarters, designed by architects with a flair for intimidation.

Visitors flock to see this church tower's unintended feature: It happens to resemble a giant chicken from multiple points of view.

A haunted hill that supposedly defied gravity.

These spartan apartments are provided to clergymen visiting Vatican City.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

This simple apartment may have inspired some of the most important theories in the history of science.

This experimental utopian "city of the future" in rural India may hold a dark secret.

The garage at the childhood home of Steve Jobs was a hangout for the founders of Apple, even if they never built computers there.

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.

Some people believe that this makeshift space monitoring station received transmissions from clandestine cosmonauts.

World's second largest particle accelerator, where nature reveals its secrets.

Eighty million natural history specimens call this gargantuan museum home.

Large Hadron Collider and the Birthplace of World Wide Web.