Golden Gate Park's historic collection of plants.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

An essential stop before plundering, BYO Cutlass.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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

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

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

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

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

A beautiful final resting place for some of the noteworthy deceased.

A rotting tree in the middle of Seattle doubles as an elaborately-controlled art piece.

A museum dedicated to the history and exploration of both popular music and science fiction.

A wall of chewing gum moonlights as collective art.

A walk through the historic city center, under the streets of Seattle.

This working class sculpture pounds his hammer all the livelong day.

A colorful architectural gem in Seattle's uniquely modern Central Library.

The world's first permanently occupied mountain-top observatory continues to report on the stars.

This giant shopping mall still holds signs of its automotive past.