This 252 step staircase offers stunning views of San Jose.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

More than a century of radio history is told in these displays.

Home to the Titanic Historical Society's collection.

The home of a famed utopian science fiction author has been preserved long after his predicted future in the year 2000.

This exhibit is devoted to the games and wonder that Hasbro has brought children worldwide.

This once-grand marvel of engineering is now 41 miles of scenic hiking trail.

This Bronx apartment building is officially recognized as the birthplace of hip-hop.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

Abandoned anti-ballistic missile base.

Abandoned Air Force base that has fallen into disrepair.

One of the ghostly stops along Route 66.

This impressive tunnel was dug entirely by hand over the course of 36 years.

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.

The liveliest ghost town in the state.

Another of California's unused Cold War missile defense complexes has become a graffiti gallery.

Elephant seals and sea lions have turned the abandoned buildings on this island into their endangered love shack.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.

A crumbling wizard is one of the final reminders of a roadside Middle Earth.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

An abandoned Cold War missile radar site.