A surreal pile of colorful junk fills a small yard in an otherwise gray neighborhood.

An incredibly random collection of wax figures is displayed in a shopping center walkway.

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

A pair of gigantic baby heads greet passengers at Atocha Station.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

Over a thousand feet beneath the Detroit streets is a subterranean metropolis few are allowed to enter.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

These caves secretly held national treasures during World War II.

Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.

Complex aquaponics systems allow fish and plants to grow in harmony.

A trailblazing sovereign nation tucked in the American state of Wisconsin.

This historic rec center in the heart of Israel is a bastion of peace and togetherness.

Located within one of Israel's most picturesque monasteries is also the country's first meteorological research station.

Idol made by King Jeroboam for the Israelites.

This former luxury resort in Kaua'i is now an abandoned relic.

Football field-sized microalgae production tanks on the Hawaiian coast create a stunning view from space.

What remains of the summer palace of King Kamehameha III.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.

The world's first floating farm is staffed by one human, three robots, and 35 cows.

The world’s largest collection of angel figurines includes 600 black angels donated by Oprah Winfrey.

One of the highest points in Bexar county offers birdseye views of San Antonio and a four-story stone tower.

A colorful public mural in San Antonio's West Side encourages students to stay in school.