The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

A small burial plot formerly stranded in the middle of a road.

This zombie-themed restaurant stands out in the heart of corn country.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

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

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

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

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

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

Yo, Adrian!

This elaborate towering structure was once famed for its revolutionary height.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

The narrowest house in America is seven feet of pure spite.

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

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

One street divides a single town that stands in two U.S. states.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

At 207 feet, one of the world's longest continuous escalators.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

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