Home to one of the world’s largest collections of model yachts.

Perfect your fly fishing technique on their practice ponds.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

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

Standing in for the first ship to navigate the Northwest Passage.

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

A 300-ship graveyard, with a few still visible at low tide.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

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

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

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

A monument to the love people have for their pets.

Concrete strongholds stand guard over the Golden Gate.

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

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

This black shoreline is made up of exploded lava particles.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

One artist’s scheme to expand museum viewing hours into the evening led to the illumination of an entire city.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

This statue of the "father of television" stands prominently in the United States Capitol.

Corn-inthian columns with a uniquely American take on neoclassical architecture.

The walls of the iconic dome are hollow and have a secret stairway.