Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Four alabaster giants contemplate the tides on the shore of Denmark.

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

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

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

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

Old Danish castle immortalized in Shakespeare's Hamlet.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

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

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

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

The last fully functional fortress of Germany's World War II Atlantikwall.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

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.

This charming English house was once the home of England's most famous poet.

Largest lake in Great Britain measured by surface area.

A 200-year-old collection of oddities and medical paraphernalia.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

A century-old tradition has culminated in a small but singular collection of feline effigies.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

This massive blockhead sculpture hides an entire library.

Sky ships, planes, and portraits left as unique tokens of hope and thankfulness.

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.