This abandoned, turn-of-the-century astronomy hub is now the subject of more photographs than it ever took.

The Gaudí-inspired building that was the start of Terrassenc modernism.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

This religious complex carved into a cliff is steeped in legends of miraculous stags and the Holy Grail.

Just like in Hollywood, Madrid has also a forgotten walk of fame.

Cliffside houses provide a spectacular view from their perch above the valley.

Go surfing on this urban wave, "hacked" by local surfers.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

Looming communist pillar with a Czech twist.

This automated sculpture of two men peeing will spell out text messages with their micturition.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

The first museum in the world devoted to sexual gadgetry.

Two stunning 17th-century libraries and a cabinet of curiosities.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This Swedish automobile graveyard is a beautiful gallery of decay, but woe be to any who would steal a souvenir.

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

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

An alien church provides much needed silence in the midst of a Finland shopping center.

Finnish lake, and scene of an infamous murder mystery.

Pigduck of Turku.

A botched 18th-century canal silenced one of Sweden's most magnificent waterfalls.

The world's first ice hotel is still one of the most elaborate and beautiful.

The world's most charming instant portrait studio also happens to be its smallest.