Decommissioned experimental solar facilities that pioneered solar energy technology.

A devilishly named gorge that was a sign of salvation for many pioneers.

An antique Beechcraft airplane serves as a giant windsock for people driving through the blustery open country of eastern Wyoming.

The first declared National Monument in the United States.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

South Dakota's oldest operating brewery is housed inside a historic firehouse.

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

Every president in history is immortalized in bronze in downtown Rapid City.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

An oddly specific collection of handmade dolls remembers the women of the White House.

Metal water storage tank turned ethereal concert hall.

An eccentric home stands out in an otherwise average neighborhood with mosaics, mini topiaries, and kinetic sculpture.

A tiny survivor of the Donner Party disaster.

This 15-story mural celebrates the 50th anniversary of the musician's iconic "At Folsom Prison" album.

Art Deco stylings conceal the true nature of this bridge.

I Street Bridge is the heaviest swinging center bridge in the United States.

This 19th century train workshop is a treasure trove of railroad history.

The California capital city once stood 10 feet lower than it does today.

A replica of the first public theater built in California.

Where the first "expert riders, willing to risk death daily" for the Pony Express were recruited.

The capitol city's oldest existing cemetery.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

The Incredible Hulk, Yoda, Mulder and Scully, and many many others watch over the mean streets of Toronto.