Water-themed sculptures guard this unusually square structure.

This astronomically-aligned stone circle was the first of its kind to be built in Great Britain after a 3,000-year hiatus.

The world's oldest surviving music hall was also once a freakshow.

Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

The so-called "Father of Las Vegas" had the city's first telephone installed in his office in 1907.

An abandoned convention space that has been left to the homeless and the radical.

Indents in the pavement are all that remain from a grisly death machine in Paris.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

This banal Parisian entranceway is not what it seems.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

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

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

When the imprisoned pope's remains were finally returned to the Vatican, his heart stayed behind in France.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

The video game-themed street art first popped up in the French city.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

Stripes of human ashes cover a back lawn in the most sought-after burial grounds in Paris.

This picturesque view of the Scottish Borders was beloved by Sir Walter Scott.

One of the oldest bridges in Norwich was used during the English witch trials and is said to be haunted.