The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Hans Christian Andersen for the postmodern world.

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.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

Possibly the world's largest coin stands just outside of a Canadian science center.

This giant roadside fruit is home to an array of apple-based treats.

The longest enclosed pedestrian bridge in the world spans 14 lanes of traffic and six rail tracks, all while lighting up the night sky.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

The library's graceful rotunda is like a bibliophile's temple.

It houses the remains of a 17th-century version of the Titanic.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.

Another entry into the world of Edinburgh's pop-up artworks.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

The most loyal of little dogs, or a Victorian era publicity stunt?

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.