Berlin's old airport.

A bronze sculpture immortalizes a historic 1936, 26-day-long march for economic relief.

Home to the longest wooden escalators in the world.

Said to be the best reconstruction of Roman remains in Britain

Tucked away in a London Tube station, this 1920s linear clock shows the time across the world all at once.

London's Victorian Tower of Babel.

This tribute to the fictional detective stands at the famous literary character's address.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Black cat statues guard this temple-like Egyptian revival factory.

Murals created to save a fisherman's quarter from demolition!

A museum of carnival attractions where you are invited to ride the rides.

See every month of the year personified at this opulent Turinese fountain.

This sinister Baroque entryway could lead you to a terrible fate.

This fountain is dedicated to the workers who perished constructing the Fréjus Rail Tunnel.

This building has a giant piercing through one of its corners.

A portrayal of two lamps embraced and in love.

The intricate geometry inside this Baroque-style dome was designed to create "terror of the human soul."

The astonishing collection of an infamous criminologist.

This 2,000-year-old Doric bridge is still open to pedestrian traffic to this day.

Famous landmarks and structures from across Italy fill this miniature park.

Where members of the Crossbow Corps of San Marino demonstrate their skills.

High in the clouds of San Marino sits an ancient tower with some curious prisoner graffiti.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Abandoned railway line circling the city of Paris.