Oriental bazaar in the heart of Sarajevo.

The place where World War I began.

This tiny, tucked-away eatery reflects the history of Mexico's Lebanese immigrants.

This collection of promotional calendars preserves a staple of mid-century Mexican pop art.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

A real flying saucer, contracted by the U.S. Air Force.

A jukebox headstone marks the grave of the Cleveland disc jockey credited with coining the term “rock 'n' roll."

This retired stagecoach tavern is the oldest building in Cleveland.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

Detroit’s Eastern Market has been transformed into an outdoor museum with colorful murals that address social issues and symbolize the city.

The birthplace of the Ford Model T is now a museum full of antique cars.

This public baseball field is a beloved remainder from of one of the most historic stadiums in the country.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

It's believed this golden brick is part of the legendary lost Aztec treasure.

This underground museum highlights the history of Mexico City's subway system.

A bullet-scarred monastery chronicles Mexico's turbulent history of foreign invasions.

Murals made with millions of colorful stones adorn the abandoned building.

The final resting place of the most famous sharpshooter.

These sacred Mesoamerican ruins feature peculiar petroglyphs hidden in the stones.

A sapling of the legendary tree where conquistador Hernán Cortés sat and wept after an Aztec uprising.

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.

Psychedelic murals coat the inside of a nondescript research library.