Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

These coffin-like Brutalist balconies were inspired by a nearby mine.

World's strongest whirlpool.

This floating sculpture of ice is a poignant reminder of nature's power.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

This underground car park moonlights as a permanent art exhibition.

Strolling through these vintage locomotives offers a surprising amount of insight into the history of Kenya.

This colonial fort is an intriguing example of Renaissance military architecture.

This nightlife venue and cultural center keeps a unique Ethiopian musical tradition alive in the nation’s capital, but breakneck urban development threatens to shut it down.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

An ancient Ethiopian cave church is endangered by the simple building of a road.

According to one local legend, this image was created during a battle between a wild lioness and the archangel Michael.

Massive stele returned to Ethiopia after 70 years in Rome.

Supposedly this Ethiopian chapel holds the Ark of the Covenant, guarded by virgins who cannot leave the building.

Reaching the "Church in the Sky" requires scaling the cliff face of a sandstone pinnacle with a 650-foot drop.

The Earth's saltiest natural body of water belches toxic gas.

The hottest place on the planet.

Ethiopia's "smoking mountain" is in one of the hottest regions on the planet and is home to two lava lakes.

An ocean in the making, in the Ethiopian desert.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

A fortified palace in the shape of a ship on the Thiou river.

This otherworldly French waterfall looks like its waters have turned to stone.