Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

Fonts are born and bred here at the oldest letterpress type foundry in the United States.

San Francisco's most expensive hotel suite includes a secret passageway rumored to have been used by JFK.

The remains of a 12th-century chapter house in Golden Gate Park.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

A promotional sun clock on the site of San Francisco's great raceway.

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

Tenacious mummies survived dental problems, eternal entombment, and more than their fair share of devastating fires.

Appropriation-friendly collection of books, periodicals, and more.

Nuclear waste dump site now an environmental sanctuary.

The miraculous hydrant that saved the Mission District in 1906.

Golden Gate Park's historic collection of plants.

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

A monument to the love people have for their pets.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

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

The remains of a ruined mansion memorialize the 1906 earthquake.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.