This former quarry is now a picturesque gorge that hides a sunken lake.

A spiral staircase twists to the top of this unusual Czech lookout tower.

Colorful mineral deposits turn these mountains into an Impressionist fantasy.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

According to myth, there's a bloody explanation for the beautiful bright red color of this rock formation set amidst alpine vegetation.

The tallest mountain in mainland Netherlands isn't actually very tall.

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

Atop this former dutch railway office sits an interstellar work of art.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

This was once the largest city in Kazakhstan, and a major stop on the Silk Road.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A modern Nordic Pompeii on the Icelandic island of Heimaey.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

A seemingly desolate park that belongs to two countries actually supports all kinds of wildlife.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

God's Saharan sandbox of wrath.

One of the most spectacular canyons in the world.

Traditional 11th-century outdoor tannery.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

Mosaics, storks, and brothels—this ancient city has it all.