An opulent monument built for a duke who donated his entire fortune to the city of Geneva.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

A 14th-century church holds a unique monument to a German mathematician who dedicated his life to calculating the value of pi.

A tiny house showcases the busy life of a local gnome.

Once the world's most modern observatory, this building is now a private school.

Stockholm's famed ghost train is now on display at an art park in northern Sweden.

Some clocks inside this museum are more than 500 years old.

This serene wooded hilltop has a dark history as the climactic point of the Swedish witch trials.

The site of Stockholm's last public execution.

The "geometrical" center of the country, as calculated in 1947.

The house where a Danish physicist discovered the connection between electricity and magnetism.

The final resting place of one of the brightest physicists of the 20th century.

Part of an abandoned19th-century fortress hides in plain sight inside a modern office building.

The world's first combination ski slope and power plant.

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

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

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

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

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

Copenhagen's celebrated theme park and gardens.

Hans Christian Andersen for the postmodern world.

The final resting place of the author who gave us the Little Mermaid, the Ugly Duckling, and many more beloved fairy tales.

The longest eruption in the history of La Palma originated with this volcano in September 2021.

The world's largest single-aperture telescope resides in the Canary Islands.