The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A backdoor to Machu Picchu that only the most foolhardy infiltrator would attempt to breach.

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.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

A monument to the conquistador became increasingly controversial in the very city that he founded.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

A fine mixture of the old and the new topped with an art deco neon spire.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

A Wild West saloon that helped define a generation of psychedelic rock.

The smallest country in the world.

The Wonder Road aka Doobie Lane, a mile-long strip of dirt road filled with folk art.

This beloved roadside attraction welcomes visitors with his signature neon smile.

The first mosque in the world to receive electricity.

A monument on the pavement marks the spot where two cultures that shaped Sarajevo come together.

The haunting ruins of a military fortress turned astronomical observatory sit on a Sarajevo mountaintop.

A war-torn Olympic relic is being overtaken by graffiti and nature.

The sad remains of a monument to martial arts legend and movie star Bruce Lee—in the middle of Balkans.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

A field filled with carved medieval tombstones called stećak.

A 16th-century mosque rebuilt after wartime devastation.

A solar-powered primary school inspires hope and experimentation in a country ripe for energy innovation.

A historical puzzle lies at the origins of this structure.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

In the hometown of the Catholic saint and Nobel Peace Prize winner, a memorial dedicated to her legacy.