A 220-foot deep watery drop-off, filled with marine life.

Uninhabited islet in the Caribbean is the sanctuary of giant lizards.

Granny Smiths and Fujis can both be traced back to Kazakhstan, where apples still grow wild.

A brilliant turquoise lake in the mountains.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

Pick up all of the cosmic knick-knacks under the sun or take a creative writing course, all offered in this novelty storefront.

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

The miraculous hydrant that saved the Mission District in 1906.

A rococo retro-futurist future-rustic vernacular between yesterday’s tomorrow and the future that never was.

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

An essential stop before plundering, BYO Cutlass.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

A psychedelic labyrinth on the San Francisco bay.

A 140-year-old castle with underground caves hidden in San Francisco.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

A huge musical instrument played by the ocean.

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

A colorful statue honoring the local salmon in glass and bronze.

What's that on the side of that building? Va Va Voom, it's Bettie!

Old submarine parts have been converted into faux whale fins.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.