A stunning landscape of bunkers that once stored chemical weapons.

A Roman-style column in Oregon hides a spiral staircase inside.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

A massive sea stack famous for its appearance in The Goonies.

This super-sized skillet is a replica of a usable giant pan where a woman once skated on bacon.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

Home of Jake the Alligator Man, the mummified remains of a cigar smoking, cross-dressing celebrity of the Northwestern coast.

100-year-old shipwreck you can walk up to at low tide.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

Peak named for an old man who liked to run in the nude.

Life-size figures portray depot attendants, train crew, and passengers frozen in time at the oldest railroad station in Arkansas.

The seventh largest spring in the world.

The only remaining sod house Oklahoma built by a homesteader in 1894.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

An architect's childhood fantasy treehouse made real.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The largest self-built castle in the U.S., six decades in the making.

The highest bridge in America was built for an almost unnervingly small amount of money.

The world-record holder for the longest bridge stretching continuously over water.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

Home to the deepest rift anywhere on Earth.

These century-old beehive-shaped kilns were built to produce charcoal for nearby mines.

Home to a timed geyser created by complete accident.

This set of hot springs also comes with fantastic views.