Climb to the top of its spiral spire for spectacular views of Copenhagen.

The inky volcanic sand leads to reefs teeming with aquatic life waiting to be discovered by snorkelers and divers.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Humble beginnings for one of the world's most famous scientists.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

An ethereal glowing blue ocean cave in Croatia.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

A musical instrument played by the sea.

A stone in Wolin, Poland, marks the possible location of a legendary Viking fortress.

Bali's remote "gateway to heaven" is one of the most sacred places on the island.

One of only two places in the world where two rivers cross each other without the waters mixing.

One of the most well-preserved temples of ancient Egypt.

According to legend, this boat-shaped henge is built over the grave of a mythic king.

A peat bog in southern Sweden provides a cozy and photogenic home for junked Volvos, Saabs, and the occasional American muscle car.

The last king of Poland was interred in this church nearly 200 years after his death.

This grubby wall is said to be one of the Earth's esoteric energy centers.

This bell stars in a tragic love tale and is said to make wishes come true.

Enormous sandstone towers loom within a Czech forest.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

The largest toy museum in Poland showcases Europe's history of childhood.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

This bewitching Babylonian goddess haunts a hallway of the British Museum.