Don't get it twisted: This is the oldest pretzel bakery in the United States.

A local prank turned town icon.

The romance of early commercial flight still fills this Art Deco destination.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

The land is home to swimming ponies and a legendary 18th-century treasure.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Steepest flood safety railway in the entire world.

Memorializing an American tragedy of massive proportions.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A diorama of the Civil War, fought by cats.

Home of the only civilian casualty at the Battle of Gettysburg.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

The beloved, war-tested mascot of a Union regiment graces their battlefield monument.

A soon-to-be-forgotten roadside spectacle loaded with local lore.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

A star fort along the C&O Canal in western Maryland that protected America in three wars.

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.