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

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

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

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

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

Guns that have been defending San Francisco since 1904.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A rococo retro-futurist future-rustic vernacular between yesterday’s tomorrow and the future that never was.

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

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

Faceless white figures loom over the city from the rooftop.

A shining, cold, black organ lies in San Francisco's financial district.

An invitation-only museum of items natural and bizarre, arcane and exotic.

This shop specializes in oddities and Victorian-inspired wonders.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

What was once the largest NFL stadium.

These beautiful wineries were at the center of Lake Erie's "grape belt" back when the Midwest dominated American wine production.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

Deep scars on the earth left by the Ice Age.

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

Take a drunken tour inside the world's largest known geode.