An artist's mausoleum with a haunting echo.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

Walk behind a 50-meter-high waterfall.

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.

Home to three historic ships from the age of Vikings.

The world's largest underwater restaurant is submerged off the southern tip of Norway.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

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

St. John the Baptist's forearm is housed in this remote 11th-century monastery.

A mosaic monument that commemorates the historical struggles of the people of North Macedonia.

A historical puzzle lies at the origins of this structure.

Artists made this mosque into a marvel of Ottoman baroque architecture.

Depending on the region's rainfall, this church may be partially submerged.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

Stone pillars and a petrified wedding party in the hills of North Macedonia.

This 3,800-year-old site contains markers used to study the movement of the sun and moon and create a lunar calendar.

This may be the world's only drive-through windmill.

The mirrored section takes the shape of Hebrew characters when viewed from above.

A relic of the old jail still stands in its original location.

For years, the remains of this ancient Roman fortress were hidden under an orchard.

A Dutch museum preserves the world's most diverse collection of vertical slices of soil.

It's forbidden to dig within this ancient Roman fort hidden beneath a playground.

Organisms normally seen under a microscope decorate this church.