Legend has it fairies gathered at the site of this medieval castle.

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

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

An ethereal glowing blue ocean cave in Croatia.

Albert Einstein's head sticks out of a snail shell stacked on a rocket in this truly bizarre monument to the scientist.

Inside this German disco, visitors can take a literal ride on the dance floor.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

The tallest lighthouse in the Nordic countries was also the site of a bloody World War II battle.

Hidden deep in a forest is this geological wonder carved by glaciers.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

Quality time with reindeer in the stunning scenery of their natural Lappish habitat above the Arctic Circle.

This fantastical icy castle is built anew every winter.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

A historic scientific breakthrough that crosses nine borders.

Legend says lovers who hold hands while venturing along this stone jetty and kiss at the end will remain together forever.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

Plaques celebrating Lithuanian writers freckle a wall of this picture-perfect path.

A small monument in Lithuania marks the geographic center of Europe—or at least one of the claimants.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

Museum deep in the catacombs of St. Michael the Archangel Church is explored by touch, sound, and smell.

Ever-growing collection of devils in art.

Things aren't quite what they seem at this mind-bending museum.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.