The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

Touching the iron railings of Tarragona's balcony to the Mediterranean is said to bring good luck.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

The cutest way to stay safe in traffic.

The only residents of this abandoned housing development full of identical castles are stray cats and dogs.

A bit of retro transportation flair preserved in the world's largest department store.

This former Cyprus flight hub is now a crumbling, abandoned ghost complex.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

A small museum dedicated to the history and design of German packaging.

A US military accident created the legends behind this Mexican version of the Bermuda Triangle.

Where the line between entertainment and aerospace blurs.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

This stockpile of junked electronic and mechanical gadgets is a favorite among Hollywood prop masters.

Shop selling 500 flavors of soda has something for everyone.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

The first location of the eventual video game giant.

Where you can hail your favorite fictional commanders-in-chief.

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

Twisted trees shaped by coastal winds make this woodland look like something from a spooky story.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

This general store offers visitors a glimpse back into the 1930s.

A shockingly detailed small scale recreation of the temples of Abu Simbel.

This Art Deco airport was once deemed “the air hub of the Americas.”