Early prototype for Frank Lloyd Wright's Guggenheim.

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

Only hotel where you can legally launder money.

Longtime headquarters of controversial boys' club for the world's wealthiest and most powerful.

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

The only theatre in the world constructed specifically for sound movement.

Half of a house.

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

Its buzzing collection honors vibrator history.

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

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

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

Antiques by the Bay.

A free, public museum dedicated to the fascinating science of sight.

The only visible piece of San Francisco's most famous shipwreck.

This 19th-century church is now a popular roller rink.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

This Alamo Square mansion is rumored to have hosted satanic rituals and other occult practices.

One of the smallest parks in San Francisco honors the legacy of the "Mother of Civil Rights in California."

One person’s lost luggage is another person’s treasure.

This print shop boasts one of the largest pinball arcades in San Francisco.

A large Melbourne wall is home to an iconic work of art from one of the world's most renowned street artists.

A train car sitting on a rooftop makes an unlikely and picturesque setting for dinner.

The largest shot tower in Australia is a unique reminder of industrial ammunitions history.