Willy Wonka would love this weird half-a-home.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

The first free library in Georgia features an original Tiffany stained glass window of Mary Willis.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

The headless bodies of more than 1,300 guillotined victims of the Reign of Terror are buried here in mass graves.

This bridge was constructed from the rubble of the infamous Bastille.

This fertility idol of questionable authenticity inspired an iconic Indiana Jones artifact.

US-50 in Nevada is known as "the Loneliest Road in America," but this earlier iteration of the route is even lonelier.

The sole remaining outpost of a once-thriving South Carolina chain still sells “pic-a-nic” baskets.

All that remains of the once-booming chain is a single orange-roofed restaurant.

Once luxurious, these oceanfront beach homes have been left to succumb to the elements as the beach is slowly washed away.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

An abandoned town is hidden in Great Smoky Mountains National Park.

A public urinal so pretty, it was declared a national monument.

Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

A Rocky Mountain city provides a happy ending for a pinto pony and his Brobdingnagian red chair.

A super-sized promotional trick that is now a D.C. landmark.

The house where John Wilkes Booth conspired with his co-conspirators.

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

Largest Roman Catholic church in North America.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

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

A painfully obvious spy house sits right across the street from the Russian Embassy.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.