This eatery transports diners to a place that no longer exists: East Germany.

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

A large instrument played by the wind.

Radioactivity still cause for concern at this urban explorer's paradise.

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

The original place where water met land in the City by the Bay is outlined in brass.

The graffiti-covered remnants of a former triangulation station are balanced precariously on this California peak.

Adolph Sutro's little-known, geographically inaccurate, deprecated monument.

A huge musical instrument played by the ocean.

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

Longtime headquarters of controversial boys' club for the world's wealthiest and most powerful.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

One of the last remnants of the city's Chinese nightclub scene is now a dive bar selling killer mai tais.

With the touch of a button, you can read a randomly selected short story.

An art supply shop holds the secrets of this quiet neighborhood's raucous Barbary Coast past.

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

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

The sole surviving relic of the San Francisco neighborhood cobbled together from old horsecars and streetcars.

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