This enormous abstract sculpture is part jungle gym, part elaborate noise-making machine.

The first mosque in the world to receive electricity.

Oriental bazaar in the heart of Sarajevo.

Place with alleged mystical powers in Old Orthodox Church in Sarajevo.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

Dr Barnes' $25 billion private collection of art and arboretum.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

Cathedral carved out of salt, located a mile below the earth's surface.

Natural saunas fed by volcanic heat.

Astronomical observatory above Lake Titicaca.

An ancient Incan convent on Lake Titicaca's Island of the Moon.

This likeness of the famous revolutionary is entirely made of recycled scraps of metal.

A valley of unique erosion patterns lends to a view like nothing on Earth.

How a lunch counter in Chile became a shrine to the 42nd president of the United States

This museum covers 10,000 years of Pre-Columbian Latin American history.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

An Inca spa, military outpost or maybe… both?

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Did Inca children also slide down these smooth rocky slopes above Cusco?

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.