Oldest Protestant church in the Middle East, designed to resemble a synagogue.

The only quarter of the Old City not dedicated to a major world religion.

The ruins of an important pilgrimage destination for worshippers of a Maya fertility goddess.

Few of the many visitors to this resort town know of its hidden Maya ruins.

A small collection of iguana-infested ruins hides amid Cancún's bustling hotel zone.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

An ancient Egyptian temple in the middle of Madrid, Spain.

The last planned Soviet city was built for the former residents of Prypiat after the Chornobyl disaster.

The dining hall that nourishes workers in Chornobyl's Exclusion Zone is also open to visitors.

The biblical sculpture honors those who lost their lives, homes and communities to the Chernobyl disaster.

When you've got to go, you've got to go.

One of the most poignant ruins of the Chornobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

This attraction was abandoned after the Chornobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

Kyiv's answer to Muscle Beach is a Soviet-era gym made from scrap metal.

340-foot statue built to honour the Heroes of the Soviet Union.

An open-air, roadside eatery celebrating a historic indigenous cuisine of complicated significance.

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

In this historic region, homes and churches are carved into ancient volcanic rock formations.

These fantastically named natural pools look like something out of a Scottish myth.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.