There are hidden patterns on the subway seats of some Stockholm metro cars.

These waste baskets play a few risque messages to discourage littering.

The lost American era of gunfighters, bandits, Indians and steam trains is recreated in Sweden.

Sweden's southernmost point is located in this charming fishing village.

A concrete mushroom that divided Stockholm residents for nearly a century.

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

Small Easter eggs are hidden in the ventilation holes of the city's newest trains.

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

Swedish skyscraper with a 90° twist.

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

Sweden's oldest street has not changed for nearly a millennium.

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

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

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

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

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

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.

Sweden's "good old days" painstakingly re-created in a model village.

Stockholm's deepest subway station is also a stunning ecological wonder.

The library's graceful rotunda is like a bibliophile's temple.

It houses the remains of a 17th-century version of the Titanic.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

A park with one large cat sculpture and 15 smaller ones, all painted by different Colombian artists.

Outdoor escalators and art have helped change what was once a notoriously dangerous part of Medellín.