This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

A man-made island in scenic San Francisco Bay.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

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

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Its buzzing collection honors vibrator history.

A huge musical instrument played by the ocean.

Abandoned Coast Artillery fort now serves as graffiti canvas and sightseeing vantage point.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

Final resting place of one of the classic authors of horror literature.

To avoid the demolition costs this abandoned drawbridge was simply left in the up position.

Ironically this massive termite is the mascot for a company that is acclaimed for killing his kind.

A simple Colonial home with a past haunted by death and madness.

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

This 3,500 pound obelisk was constructed with more than 1,000 reclaimed guns.

The stone sculpture of an Ottoman soldier is an homage to a lost Providence landmark.

From horses to stainless-steel trucks, this iconic Providence burger wagon is one of the oldest mobile diners in the country.

Humboldt's human-powered sculptures race across land and sea for days on end in a wacky quest for dominance.

A simple plaque remembers a California island massacre that claimed more than 100 lives.

Folk art crafted from discarded vegetable crates.

Commonly referred to as the most photographed Victorian home in the United States.

This railroad magnate's 19th century tower is more than a little bit out of place in the Nevada desert.