This massive underground salt mine now holds a sci-fi theme park in its depths.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

A collection of items from a way of life that no longer exists.

This castle was designed to have as many windows as there are days in the year.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

A 20-foot-tall quarter commemorates George Washington’s ties to Bedford County.

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

The ruins of a military outpost from the 1860s form the centerpiece of a Nevada state park.

The smallest country in the world.

A concrete arrow from a 1920s network of airmail beacons is still preserved at the western edge of suburban Reno.

A monument marks the beginning of the longest north-south road in the United States.

The highest point in Maine is a grand gift to the state citizens that also happens to be one end of the Appalachian Trail.

A perfect replica of the beloved show's first set.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

This collection honors the iconic, and proudly American lighter that just won't quit.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

A beautiful hidden gem in central West Virginia.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

A bronze statue of Mister Rogers in the neighborhood where he grew up.

Antiques and recycled art surround this cabin designed to resemble a 19th-century schoolhouse.

The aggressively banal name of this underground fortress of bureaucracy does little to evoke its truly surreal existence.

Hidden in the hills of Western Pennsylvania lies one of the best-kept ghost towns in America that you can legally visit.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.