Once the fastest ship from San Francisco to Tahiti, the Galilee now lays in pieces in three different cities.

An unassuming grey box sitting on San Francisco's Pier 17 is a "sky diary" of the coastal city's temperamental weather.

Visible below the waves are memorials to the city's Gold Rush dead.

The only visible piece of San Francisco's most famous shipwreck.

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

A quiet nook at the top of a little-known hilltop park named after California's first poet laureate.

A whimsical antique shop with a strong air of mystery, filled with items from ages, and what feels like worlds, past.

This teeny-tiny park built by a San Francisco man in 1962 is mostly stairs.

America's oldest Italian restaurant is a San Francisco institution.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

A free, public museum dedicated to the fascinating science of sight.

A unique and poignant sidewalk mural commemorates the deaths of two striking workers.

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

Floating man-made island and upscale restaurant.

A psychedelic labyrinth on the San Francisco bay.

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

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

A Buddhist retreat built on more than 100 acres of California Redwood forest.

An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

Subterranean house made out of a grain silo, located in the Santa Cruz Mountains.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.

A strange house built only at night, with rumored mystic inspiration.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.