Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

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

The facade of this 16th-century building is decorated with carvings of 300 seashells.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

A rococo retro-futurist future-rustic vernacular between yesterday’s tomorrow and the future that never was.

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

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

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

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

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

Tiki luxury on Nob Hill.

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

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

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

The miraculous hydrant that saved the Mission District in 1906.

Built in 1906, this unique building was the first Hindu temple in the United States.

This private residence was the template for one of the most beloved television homes of all time.

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

A famous alternative culture epicenter and where Joplin serenaded young hippies.

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