The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

A stunning silver lining to global warming's gloomy cloud.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

Walk 2,300 feet above the ground on the "Troll's Tongue."

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

The stunningly blue waters of these beautiful caves also have a violent past.

An obelisk marks the spot where a British explorer's heart was buried before the rest of his body was transported to England.

This stunning waterfall is the backdrop to a site that has seen continuous human habitation for 250,000 years.

A series of caves within the gorge hold artifacts from the Stone Age.

This fascinating cave is packed with prehistoric rock art and Stone Age tools.

One of the largest concentrations of rock paintings in Southern Africa.

Arrogance and quarreling are forbidden near these three sacred waterfalls.

A secluded natural oasis hidden deep along a rainforest trail.

One of Yemen’s oldest and most beautiful mosques was named for the incredible, historical queen buried inside it.

Elaborate patterns adorn the city's disappearing traditional architecture.

A mesmerizing reservoir nestled at the heart of a pre-Islamic Yemeni village.

The most alien-looking place on Earth.

This South Pacific volcano has been blowing its stack for over 800 years and is said to be home to a cult leader waiting to be reborn.

One of the most ethnically diverse spots on the planet.

Light still pours into the ruins of this ancient Islamic observatory.

The Avenue of Mausolea is a series of grand palatial tombs.

This stunning mountain lake was named for a pair of tragic lovers whose statues stand at the center.

A tribute to a Ukrainian heroine who went undercover and killed several Nazi operatives.

A subterranean Holocaust refuge within one of the world's longest cave systems.