The "lovely red Vega" of the legendary record-settling pilot.

The penultimate and final resting places of British General Edward Braddock—minus a few bits and pieces.

The Pennsylvania shopping center was once the setting for the 1978 film, "Dawn of the Dead."

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

A state park that once served as an important river crossing, and now offers protected lands for endangered plants and animals.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The skeletal white beams stand as a monument to religious dissent.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

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

A former major munitions plant that has been converted into a sprawling art space.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

The Virginia farm where John Wilkes Booth met his grisly end is now largely forgotten.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

Originally a cemetery, this city park remains speckled with a handful of scattered gravestones.