San Francisco's oldest surviving monument and meeting place for 1906 survivors.

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

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

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

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

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

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

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.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

The only theatre in the world constructed specifically for sound movement.

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

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

A huge musical instrument played by the ocean.

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

This giant ice cream cone is the last remaining icon of a Salt Lake City staple.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

Visitors to this library are in for a real-world education in modernist architecture.

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

An amazing collection of fantastic reptiles, amphibians, spiders, and insects.

An vast warehouse of everyday treasures in Berkeley, CA.

A crumbling Beaux Arts monument to the Bay Area's age of rail.

The newsstand that never closes its doors—well, almost never.