The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

An industrial relic is now one of Europe's most staggering art spaces.

This former steel and coal plant is now a neon-lit industrial fantasia.

These medieval tunnels provided water to the city above through centuries of civil war and plague.

Most prolific publishing house in the 1600s open to the public.

A man throwing a giant severed hand towers over Antwerp’s main square.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

This public observatory is home to the "celestial cannon," the longest pointable telescope in the world.

Once the longest swing bridge in Europe.

Hamburgers are intensely proud of their tunnel beneath the river.

Nordic giants resurrected from the sea and restored to their former greatness.

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

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

These old World War II fortifications have been transformed into an unusual equine attraction.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

This Swedish astronomical clock was in storage for almost a century before its glorious workings were put on display once more.

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

This Scandinavian island is the site of the first modern observatory.

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

Northern Europe’s largest castle ruins sit precariously on an island cliffside.

Local legend says a monk brought Christianity to Bornholm through his sermons in a cave inside this free-standing rock.