Weighing 30,000 pounds, this monument represents Detroit's first industrial era.

The pieces in this sculpture garden are made from demolished buildings that were once landmarks of Motor City.

This observatory comes complete with three separate telescopes and a dedicated community of amateur and expert astronomers.

The unusual medical inventions of the man who gave the world Corn Flakes.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

One man’s vision of living among dinosaurs credits Jesus Christ as the engine of biological evolution.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

A lavender labyrinth so large it’s visible on Google Earth.

The only surviving prototype for Buckminster Fuller's house of the future.

The city is full of whimsical portals to another world.

This freshwater spring fills with 10,000 gallons of water per minute.

Abandoned concert venue legendary for its rock counterculture.

Divers can encounter an abandoned warship encircled by a giant kraken submerged in the British Virgin Islands.

Abortion, prohibition, religion, war, and fear all play a part in the history of this idiosyncratic Pacifica castle.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

A large instrument played by the wind.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

A 300-ship graveyard, with a few still visible at low tide.

A winding path built in secret on the edge of the continent.

Perfect your fly fishing technique on their practice ponds.

An artsy hidden staircase leads to breathtaking views of San Francisco.

San Francisco's newly reopened hands-on science museum.