An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.

When it came to designing his own small office building, the eccentric architect wasn't afraid to show the world what he could do.

Eyam took steps to quarantine themselves and keep the plague from spreading.

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

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

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

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

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

The celebrated eyesore created by starry-eyed sweethearts.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This modest marker near Notre Dame identifies the very center of Paris.

This hidden green space is the city's second largest conservatory.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

A three-story, three-dimensional hobo clown in a tutu welcomes CVS shoppers.

A huge musical instrument played by the ocean.

One of the first skyscrapers in Santa Monica, and a famous getaway for the Hollywood elite of then and now.

This poignant WWI memorial looks like a lighthouse 100 miles from the sea.

Semi-precious Blue John stones have been mined in this cavern system for centuries.

This home of a taxidermy hoarder is among the grandest and most singular of historic English estates.

A gorge full of caverns where early humans lived alongside cave hyenas, giant mammoths and wooly rhinoceroses.

Seat of the Duke and Duchess of Devonshire for centuries.

This Victorian marvel of engineering and artistic prowess is nicknamed the "Cathedral of Steam."