Norway's national monument to fallen seamen.

At this Arctic outpost, get to know members of the indigenous Sámi community and meet their herds.

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

Cold storage for agricultural biodiversity.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Hot springs monkey spa in the middle of Hell's Valley.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

An endless sea of white conical domes.

Where the Great Wall of China meets the sea.

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

This attraction was abandoned after the Chernobyl disaster.

These abandoned huts still hold the remains of an early 20th century Australian researcher's work.

This abandoned Antarctic research station is a Soviet ghost frozen in time.

The remains of a doomed Antarctic plane, buried beneath layers of ice and snow, await those willing to do a bit of digging.

Natural time capsule containing an alien ecosystem.

Fire meets ice at the southernmost volcano on Earth.

The restored and active Victorian-era final resting place of San Francisco.

The only theatre in the world constructed specifically for sound movement.

A huge musical instrument played by the ocean.