Micro-nation based around a nine-story high illegally built tower.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

This inverted metropolis model is the artist's "revenge" for not being allowed to have a doll house as a kid.

Denmark’s never-ending bridge.

One of the last remaining railway viaducts equipped with a transporter ferry.

A tiny island is connected to the mainland by a private railway that residents travel in their own personal wagons.

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

Remnants of the Nazis' occupation of Denmark linger along the sand.

A failed attempt to control drifting sands yielded a gnarled sylvan wonderland.

A Danish fisherman spent 25 years covering nearly every inch of his home with tens of thousands of shells as a gift to his wife.

Nearly 40 miles and 1,000 years of limestone mines under Denmark.

This Danish castle is supposedly haunted by a woman too independent to not be a witch.

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

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

A German apartment building hosting as many trees as human occupants.

A collection of decorative eggs to admire in the off-season.

A striking 12th-century-style castle built on the edge of a cliff.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

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

What if all public housing projects had been designed by "the Pygmalion of modern architecture," not only their prototype?

France's third-largest necropolis offers a peaceful respite from a busy port city.

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

The abandoned club hides in the hills of Ibiza.