38-story baroque tower reflecting Detroit's rise, fall, and possible rise again.

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

Collective made up of artists, musicians, and activists.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

An ornate Detroit church, left empty and ravaged by time.

This empty Detroit high school was too expensive to maintain or destroy.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

Opulent downtown movie theater now houses cars as an indoor parking garage.

The bones of an old zoo crumbling in the shadow of a new one.

Unicorns, elephants, and bears, oh my!

The exact whereabouts of this surreal cabinet of curiosities are rarely the same place twice.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

An enormous, inside-out glass globe built in 1935.

A tunnel of hardened lava along Maui’s famous Road to Hana.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

A Hawaiian stairway to heaven—that you can't climb.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

Walk the whole Mississippi River!

Home to drunken tower-climbing goats... seriously.

A crumbling stone stable and carriage house are all that remain of a manse that was once filled with Egyptian artifacts.

A virtually untouched "home on the hill" for the flora and fauna of Rhode Island.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

For 32 years the famous Ringling Bros circus troupe spent winters in this sunny spot in Florida.