Home to the world's oldest functioning orrery.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

The city that saw the birth of Sweden is now home to an impressive collection of work from its favorite artist.

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

The art museum is decorated with creatively remodeled pre-Nazi swastikas.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

An intricate and amazing house built by architect Karl Junker.

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

This large open-air museum showcases the ordinary lives of the people of the Netherlands and pre-industrial crafts and practices.

Organisms normally seen under a microscope decorate this church.

A long-closed church turned into a saintly skate park.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

Enigmatic bug-like sculptures mystify drivers along a Swedish highway.

A man has revenged his true love's betrayal through tears and stone genitalia.

Twice a year, this floating library delivers thousands of books to the remote islands of Stockholm’s archipelago.

This tiny tropical village was sick of anonymity so the locals made this sign, which actually changed the name of the town.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

A 16th-century horror show built in a lovely Italian garden.

Serbia's master of striking memorials erected a forgotten, hidden gem in the hills outside a tiny village.

These warring psychedelic crags commemorate an unsuccessful military operation.

This huge metal monument is slowly being stripped to its concrete skeleton.

A forgotten and crumbling Yugoslav monument to the victims of fascism.

This brutalist monument is inscribed with 9921 names of Yugoslav partisans who perished during WWII.