The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

An abandoned meat mecca now serves as an excellent locale for urban exploration.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

This overgrown Illinois water park offers a whole new type of adventure.

A century-old network of freight tunnels underneath the city's historic business district.

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

The NBA player's elaborate former home is now a ghost of its old glory.

An abandoned observatory in the middle of the Illinois prairie.

One of only three fountains created by the iconic architect Friedensreich Hundertwasser.

This full-sized orange tree lives suspended in mid-air above the streets of Jaffa.

The astonishing collection of an infamous criminologist.

A painted-over wall in Detroit originally built to segregate a black community from an adjacent white development.

A restored 114-year-old railroad station heralded as the most photographed depot in the United States.

Astounding collection of coin-operated games and automata.

Its floors are marked by colorful cues depicting Michigan's native fauna.

Trade in that pesky human soul for cold-hard circuits.

Everyone's invited to put on a miniature concert with this world-class musical wonder.

This 19th-century former train station’s unusual roof shape earned it a rather witchy name.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.