An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.

The only substantial part of Nazi Germany's formidable defensive line through Northern Italy that survives today, largely intact.

Da Vinci's equestrian statue, 500 years in the making.

Remnants of cone-shaped fascist bomb shelters in Milan.

The giant skeleton sculpture is surprisingly well-traveled.

This 18th-century dissection theater's frescoes display a gorgeous tension between the terrestrial and esoteric.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Go inside to really appreciate this 500-year-old technological masterpiece.

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

This tiny 1930s Art Deco airport is a beautiful remnant of a bygone era.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The remains of Crystal Palace Great Exhibition of 1851.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Hear the quietest sound from across the dome.

An unusual round church in London with a Templar past.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

Pop culture has helped to keep this iconic British building from being destroyed.

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

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

After nearly 60 years, there's still a bear at Paddington Station looking for help.