This unique medieval artwork featuring the story of the Antichrist remained lost for decades.

The first, and perhaps only, monument dedicated to Wikipedia.

A remarkable feat of Victorian engineering across the Firth of Forth.

The former home of the world-famous Templeton Carpet Factory.

The oldest house in Glasgow is now a museum dedicated to the city's medieval history.

A serene public space nestled within the remains of Glasgow’s Victorian maternity hospital

Scotland still bears an enormous scar of its Roman past.

The ornate structure is part of a building boasting more marble than the Vatican.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

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

One of Scotland's most important modern structures, it just made the '100 Most Endangered Sites' list.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

The heads of two giant mythological water horses honor Scotland's horselord past.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

Come face to face with the ferocious visage of the serpent-headed mother goddess of the Aztecs.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

Mexico City's largest market contains a Willy Wonka-esque wonderland.

Visiting this cacophonous collection of vintage novelties is like stepping into the mind of a crazed toymaker.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

Frida Kahlo's childhood home, now a museum of her life and works.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

Museum dedicated to the terror regimes of Hungary.