Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

The first American department store, and home to the largest operating musical instrument in the world.

Yo, Adrian!

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Where America's first doomsday cult awaited the end of the world.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A toxic ghost town sitting atop a massive coal fire.

This recreation of a 19th-century dime museum is full of oddities.

One of the oldest Catholic churches in the U.S., situated just east of Gettysburg.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

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

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

The largest earthwork effigy in the world.

Native Americans built this circle of stones, which was used to predict astronomical events.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

America's oldest archaeological site or a muddled case of wishful thinking.

This abandoned Victorian-style house was built in 1884.

Also known as "Robin Hood's tree," this tree became a famed location along Hadrian's Wall before it was cut down in an act of vandalism.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

This forgotten boat elevator was an engineering marvel in its heyday.

A much-maligned monument to teetotalism.