This fort dates back to 1588 and was colonized by the Portuguese, Dutch, and English and sits prominently on the Indian Ocean where azure water lap the coast.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

Open-air museum with an elaborate sculpture garden, stretching for over 70,000 square-meters.

Legend holds eating just one of these black eggs can add seven years to one's life.

This adorable birdlike police box is designed based on a play on words.

This neighborhood thoroughfare is haunted by dozens of homemade monsters.

This 700-year-old street food market features baby octopus and soy donuts.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

A sudden forest of traditional Papua New Guinean art works is hidden in a corner of Stanford University.

A hidden world of exotic succulents and cacti.

An overlooked and unassuming engineering marvel.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

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

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

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

A modest reminder of treacherous waters at the Golden Gate.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

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

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

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

Tiki luxury on Nob Hill.

This 19th-century church is now a popular roller rink.

Sitting atop San Francisco's tallest hill, a cross honors the victims of the Armenian genocide.

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