An overlooked and unassuming engineering marvel.

This turn of the century masterpiece has a mysterious goaty interloper.

San Francisco’s century-old Christmas Tree.

A garden oasis filled with flowers mentioned in the works of William Shakespeare.

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.

A monumental cross hides in the trees in Golden Gate Park.

The remains of a ruined mansion memorialize the 1906 earthquake.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

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

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

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

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

San Francisco's newly reopened hands-on science museum.

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

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

Inside this museum, the history of the Walt Disney Family empire is on full display.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

This sandstone mansion was the home of two of Oregon's most important pioneers.

The magic's in the hole!

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

10,000 flowered plants bloom in the City of Roses.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.