The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

An overgrown garden stands as a grim marker of an unrealized dream.

This tree is a living witness to the beginning of the Civil Rights Movement.

The only place for a truly presidential dram.

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

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.

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

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

Outsider art meets paleontology at this roadside reptile repository.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

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

From failed port town to Civil War fort, the ruins of this former defense saw their finest day in the television age.

This roadside attraction has been serving out its fair share of hearty folklore and chaos since 1858.

Trace the history of writing at this unusual North Carolina destination.

Ruins of an American Civil War iron forge still survive today.

A retired tobacco farmer's pet project turned into a sturdy miniature city.

One of the best places to see feral Colonial Spanish Mustangs in the United States.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

A curious collection of oddities including a lock of Alexander Hamilton's hair and Harry Houdini's ouija board.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

A sculptor's dream castle turned fantastical ruin.