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

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

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

The neighborhood church casts a breast-shaped shadow that locals have come to call the “two o’clock titty.”

A four paneled, brightly multicolored mosaic adorns the side of this popular grocery store.

A brooding mansion of clinker brick stands out among the Victorian houses of Pacific Heights.

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

The oldest still-operating tavern in the United States was once owned by a pirate.

A single light illuminates one man's overshadowed contributions to street lamp history.

An ode to Japanese artist Hokusai, with a bit of a comical twist.

Designed to not only to represent the history of the local community but also, the future.

Internationally-recognized arts center housed in a century-old former military barracks.

A winding path built in secret on the edge of the continent.

A hidden gem, named after a San Franciscan icon, offers spectacular views of the Pacific Ocean.

This Rhode Island mansion was a stand-in for the exteriors of Collinwood in the original "Dark Shadows" series.

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

A 60-room castle constructed by a horse-racing heir.

Visit a sweet shop selling one of the first candies ever made and sold in America.

One man’s hobby is another man’s world of metal wonders.

The headquarters in Salem doubles as an occult art gallery.

Like stepping into a spooky fairy-tale, this shop carries the dark ideas of artists and other makers.

The lecture hall where Alexander Graham Bell first demonstrated the long-distance phone call.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

A quiet memorial marks the spot where the victims of the Salem Witch Trials were executed.