Barça football fans might see the insignia hidden in a church window as a divine sign.

This exquisite, alienesque piece of Soviet architecture is being threatened by modern shopping malls.

This oddly shaped building is a surprising Soviet-era crematorium.

The blinking light atop the iconic landmark has been sending secret messages for decades.

Divers can encounter an abandoned warship encircled by a giant kraken submerged in the British Virgin Islands.

On special occasions, one of the world's tallest artificial waterfalls gushes down the side of this Chinese skyscraper.

Part of an abandoned19th-century fortress hides in plain sight inside a modern office building.

Despite many attempts to finish this overpass, it has been abandoned since the 1970s.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

This mysterious complex of abandoned yurts and fading murals was meant to be a center of science and spirituality in Kyrgyzstan.

The origin of this sinisterly shaped forest is rooted in mystery.

An abandoned, deteriorating tuberculosis hospital from the turn of the 20th century.

This abandoned urban warfare facility is a dream come true for airsoft and paintball enthusiasts.

The art critic claiming that "only an ape could have done this" was in fact right.

These miniature works of art are hiding in plain sight on buildings around the city.

The smallest restaurant in the world.

The world's northernmost brewery uses water from a 2,000-year-old glacier to create its beer.

A competition inspired by Stephen King's psychological horror novel "The Long Walk."

This Cuban town sets the sky on fire around Christmas each year.

This secret facility trained seals for the Swedish navy during the Second World War.

This abandoned Swedish folkpark offers an amazing view over the town of Överkalix.

Every year locals tumble 650 feet down to the bottom of the hill chasing a Double Gloucester cheese.

Street artists transformed this abandoned industrial neighborhood into one of Europe's largest graffiti exhibitions.

A former top secret military tunnel is now stuffed with snow and open year-round to skiers.