The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

The first museum in the world devoted to sexual gadgetry.

This bar and museum are devoted to the controversial comic book work of Kája Saudek.

A mocking tribute to the past and modern leadership of Prague.

Monument to a suicide protesting the Soviet invasion.

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

What looks like a suicide in progress is actually a statue of Sigmund Freud.

A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

This Brazilian town built by Freemasons is full of colonial Masonic architecture and symbolic imagery.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Few would expect the world's oldest preserved oil refinery to be found in Sweden.

A museum dedicated to the history of psychiatric treatment featuring a gallery of art made by patients.

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

An old Danish political institution where members of government can grab a drink off the record.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

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

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

A model memorial to the original Odin Tower, the second highest tower in Europe before it was sabotaged by Danish Nazis.

An exhibition of preserved locomotives housed in a 1950s depot shows the history of Denmark's railway.

Although rarely used, there is still a hidden room for the royal family at the Stockholm central station.

The internet as provided by a James Bond villain.

The old fire station features a mural that has more to it than first meets the eye.

The first skyscraper to include a Ferris wheel built into the facade.