A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

These abandoned grain silos and tunnels are an urban exploration dream.

This sprawling, formerly elite sporting complex in Amman, Jordan has become a local picnic spot.

The site of a gold-digging conquistador's bloody landing in the Americas.

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

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

Collection of vintage trailers double as hotel rooms.

A bedazzled house and crown "jewel" of outsider artist Loy Allen Bowlin.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

A heartwarming message to those entering and departing Music City from above.

When Motown musicians came to Nashville in the 1960s they stayed at this historic record-pressing company because hotels wouldn't host them.