Vibrant paintings stretch across 600 feet of derelict railway.

Glasgow's oldest pub has a proud literary tradition and possibly a ghost or two.

A leafy, peaceful oasis nestled in the heart of Glasgow's busy south side.

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

This Scottish museum is the only one in the world to focus not on one religion but all of them.

A 200-year-old collection of oddities and medical paraphernalia.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Edinburgh’s version of the Sistine Chapel is this former church, with an interior covered in paintings done by one woman over the course of nearly a decade.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

The world's oldest bookshop still in operation.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

An ancient Egyptian temple in the middle of Madrid, Spain.

Earth's rocky history has rarely glittered so brightly as it does in this Spanish museum.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Remains of the lost church hide beneath this Spanish Parliament building.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

A lush indoor jungle fills this bustling Madrid transportation hub.

An open-air sewer system that was covered piece-by-piece over 300 years.