Every Tuesday, students let off steam by screaming into the night air.

This fantastic cave remained unexplored until 1948 when three schoolboys discovered a hidden entrance.

A steel paper plane is all that remains of a crashed aircraft that caused an amazingly small amount of damage.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

This pyramid in southern Sweden houses the remains of an eccentric nobleman, who spent his life doing whatever he felt like doing.

Sweden's oldest animated sign is still lighting up the skyline today.

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

Stockholm's narrowest alley is barely over two feet wide.

A former suicide bridge is now accumulating symbols of love instead of a body count.

Enigmatic bug-like sculptures mystify drivers along a Swedish highway.

Ancient burial grounds of the wealthy.

Despite the groans of archaeologists, this astounding groups of Bronze Age petroglyphs have been painted red for tourists.

This wonky bit of historical taxidermy is experiencing a second life online.

Frequent fliers welcome in this airplane hotel.

The single richest source of elemental discoveries in the world.

Stockholm's tiniest statue is of a small boy looking at the Moon.

This Swedish automobile graveyard is a beautiful gallery of decay, but woe be to any who would steal a souvenir.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

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

One of the world's few mounted blue whales, its jaws are hinged open allowing visitors to descend into a lounge.

Early habitat dioramas and home of the elusive gaff, the skvader.

This encrypted monolith protected a secret of Norse mythology by hiding in a church wall for over a millennium.

Crooked windswept pines give this old forest an enchanted and magical look.

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