The fading, forgotten remains of a once bright and booming factory.

Statues of Ramona Quimby, Henry Huggins, and Ribsy the dog in the park where their adventures "really happened."

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

Noble beasts perhaps, but not the Emperor's dogs.

Faceless white figures loom over the city from the rooftop.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

360° views of the city plus five floors of optical illusions and hands-on science.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

Gold Rush-era tombstones line the park's paths.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

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

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

The miraculous hydrant that saved the Mission District in 1906.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

A museum befitting the city responsible for supplying the majority of the world's LSD.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

The Laureates here get something even more coveted than a Nobel Prize: free parking for life.

A sculpture of a flying hawk made from colorful car doors.

An abandoned amusement park based on the popular 1940s Red Ryder comic strip.

When life gave this firefighter a forest fire, he made a rough-hewn sculpture park using a chainsaw.

Albuquerque found the perfect use for tumbleweeds at Christmastime.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

A serene garden path lined with 36 haiku stamped into clay stones.