An enchanting tunnel of cypress trees leads to an old morse code station still used today.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

Towering high above the neighborhood of La Candelaria, the church is easily recognizable by its distinctive red-and-white striped facade.

Created in 1972, the famous sculptor's intricately detailed monument to San Francisco is overflowing with city landmarks.

An enormous illuminated figure dances on the Las Vegas strip.

A speck of nature and art in one of San Francisco’s most notorious neighborhoods.

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

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

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.

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

Gold Rush-era tombstones line the park's paths.

Golden Gate Park's historic collection of plants.

The remains of a ruined mansion memorialize the 1906 earthquake.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

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

An essential stop before plundering, BYO Cutlass.

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

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Olfactory delights in San Francisco's Botanical Gardens.