The historic building's ornate stained glass fixture has survived the devastating 1906 earthquake, ensuing fires, and multiple redevelopment attempts.

Lombard Street may be more famous, but this is the real “crookedest street in the world.”

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

The narrowest street in Paris.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

A beacon atop a downtown building provides Bostonians with weather forecasts and baseball news.

This impressive Boston holy house is the American mecca for Christian scientists.

This plaque is dedicated to a historic hotel’s Canine Ambassador and the subject of two children’s books.

This historic vessel on display in Massachusetts made a dozen scientific expeditions into the Arctic.

This historic roadhouse has many tales to tell of San Francisco's early history.

Home of modern dancer famously strangled by her own scarf.

27-room home built with the fortune of a sugar magnate.

These subterranean storage areas hold emergency water reserves.

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

California's most comprehensive horticultural library.

A masterpiece in Golden Gate Park by virtue of the artist’s debt.

San Francisco's first World's Fair, dedicated to the wonders of California.

Part mural and part sculpture, this work of art sits in the middle of the Promenade, as if swimming in a river of asphalt towards the ocean.

A hidden subterranean installation offers a view of the sky.

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

Approximately 250,000 people left homeless by the great earthquake and fires found shelter in Golden Gate Park.

Once the site of speeding horses, now home to picnickers and public concerts.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

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