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

A modern mechanical planetary system, part of a 10,000 year clock.

This contorting sculpture is the tallest in San Francisco.

A former hardware store near Yerba Buena is the official home of California's history.

The oldest dim sum restaurant in the United States is a nostalgic jewel.

The oldest alley in San Francisco is paved with a reminder of the city's original shoreline.

A Barbary Coast watering hole built into a Gold Rush shipwreck.

Gold Rush ship-turned-hotel buried underneath San Francisco's financial district.

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

The last used bookstore in Downtown San Francisco is one of the smallest bookstores just about anywhere.

A shining, cold, black organ lies in San Francisco's financial district.

Faceless white figures loom over the city from the rooftop.

These six walrus head statues harken back to a time when this area wasn't far from the oceanfront.

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

America's oldest Italian restaurant is a San Francisco institution.

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

One of few lasting examples of the brief octagon craze that developed into folly.

Chevron maintains one “Standard” brand station per state so it doesn’t lose the trademark.

Its buzzing collection honors vibrator history.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.