The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Copenhagen's celebrated theme park and gardens.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

This ultra-modern wooden boardwalk turns the ocean into a swimming pool.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

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

Where a troll might repair your shoes in exchange for a bowl of porridge.

An art installation composed of items left behind by beachgoers.

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

At this bohemian accommodation, guests who dream of joining the circus can spend the night in themed wagons.

Swedish skyscraper with a 90° twist.

This millstone commemorates a gruesome tale that may have been the source of the city's name.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

One of the largest busts in the world celebrates the German city's erstwhile namesake.

This small exhibition displays equipment and artifacts once belonging to the feared Stasi secret police.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

This watchtower once presided over the Berlin Wall.