Nuclear waste experts study this prehistoric crater lake to envision landscapes one million years in the future.

This honeycomb-textured tafone looks like a petrified troll head.

This intricately spiralling forest was created as a monumental work of art.

These Finnish rapids have been attracting tourists for over a hundred years and are now released with the push of a button.

The smallest restaurant in the world.

Crawling into this primordial cave may feel disconcertingly familiar.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

Legend has this precariously placed rock was placed by giants. Science has another explanation.

Menacing or in memoriam, the Silent People and their meaning are left to interpretation.

A stunning silver lining to global warming's gloomy cloud.

A rare rune stone dedicated to a woman.

This giant subway sculpture celebrates the fruit that inspired the theory of gravity.

A former top secret military tunnel is now stuffed with snow and open year-round to skiers.

This small town's local tradition is to create the world's tallest ice pillar.

For a couple of months each year this Swedish city turns into a festive neon phantasmagoria.

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

This chimerical bridge/tunnel appears to dead end right into the sea.

The only things left in this abandoned Latvian graveyard are a mysterious stone and a ghost story.

A memorial to a Swedish hockey player's "encounter" with aliens.

This Stockholm light tower can be controlled by anyone with a smartphone.