An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

Shoot for par over the bodies of the dead on this cemetery-cum-golf course.

The oldest lawn bowling club in the United States.

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

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

The remains of a ruined mansion memorialize the 1906 earthquake.

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

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

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

The "lovely red Vega" of the legendary record-settling pilot.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

A massive Montreal stadium that has seen nothing but trouble since its inception.

The home, museum, and death site of Kodak's influential founder.

The largest guitar store in the world has been visited by some of music's all-time greats passing through upstate New York.

From the Difference Engine to the Cray-1, all under one roof.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.