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.

Faceless white figures loom over the city from the rooftop.

A man-made island in scenic San Francisco Bay.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

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

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

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

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

This 1830s store is believed to be the site of Harriet Tubman's first stand.

The land is home to swimming ponies and a legendary 18th-century treasure.

The trials and tribulations of marking Poe's grave.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

Frank Lloyd Wright built this suburban synagogue late in life, but it stands among his most iconic masterpieces.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

World War II bunker still standing on the New Jersey beach.

Step inside Lucy, the world's largest "elephant."

A unique sculpture park that specializes in the huge and bizarre.

What began as an art installation is now the private drinkhaüs for a brewery's employees.