A psychedelic labyrinth on the San Francisco bay.

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

Mysterious ancient petroglyphs carved on a glacial boulder at the tip of Bainbridge Island.

This monument remembers the first Japanese Americans forcibly relocated during World War II.

Providing the soundtrack to the golden years of the Seattle grunge scene.

A sliver of nostalgia in Seattle's Viretta Park.

A vinyl-lover's Shangri-La.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

Essence of hound's tongue and tincture of bloodroot are just the tip of the herbalist iceberg at this beautiful, impressively-stocked apothecary.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

A giant Troll lurks under one of Seattle's oldest bridges.

This mineral lake known for its healing powers is so buoyant it's been dubbed the "Dead Sea of Canada."

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

Less a museum than a bizarre fantasy world created by artists and engineers.

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 eclectic trailer park retreat in the middle of the California desert.

A huge musical instrument played by the ocean.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

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

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

You may get stranded and everyone's peeing in the water, but at least there's cocktails!