A subterranean house of worship carved right out of the bedrock.

Architecturally stunning library serves as the hub of Finnish scholarly life and culture.

Tiny Swedish village with a distinct local phenomenon known as an "Elk Shower."

Once the nail factory shut its doors, this Swedish factory town was abandoned, leaving behind a modern ghost town.

A tiny town hall—in Sweden's one-time capital—might be the smallest in Europe.

These two springs are tied to several legends, one of which involves the travels of Saint Olof.

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

These ancient rune stones plucked from the countryside now call this university park home.

The oldest Swedish built lighthouse still guides ships through the archipelago.

This tree was once used to calculate the decrease of the Baltic Sea.

One of the world's first dedicated bank buildings in the world is now the oldest one.

This roundabout was renamed in honor of the Swedish king's royal fender-bender.

A centuries-old copper mine that once provided two thirds of the world's copper supply.

Despite dreams of constructing this fairytale mansion, Albert Gotthard Nestor Cedergren never saw its completion.

Many historians today consider Sverre as Norway's greatest king of all time. 

The apartment where Pippi Longstocking came to life.

Stockholm's famed ghost train is now on display at an art park in northern Sweden.

Unfortunately, you can no longer spend a night in this single-person treetop hotel.

A traveling Bronze Age sacrificial stone that was used to honor elves, fairies, and other woodland spirits.

The giant club-wielding wildman stands proud as the symbol of Swedish Lapland.

A reproduction of a mysteriously preserved body found in the 18th-century and put on display for years before burial.

The city that saw the birth of Sweden is now home to an impressive collection of work from its favorite artist.

The world's largest underground iron ore mine.

This runestone once destroyed by an explosion has been painstakingly reassembled to save its history.