Every Christmas, one Arizona city makes the most of its dry climate by creating an arid desert tannenbaum.

America's only nuclear missile silo open to the public.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

At the top of the hour, this steam-powered clock's eight brass whistles play "Back Home Again in Indiana."

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

The gambling entrepreneur who built a city was also an avid collector of classic cars.

A World War II officers' club features Old West murals painted by German POWs.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

You thought Santa Claus didn't exist, but it turns out you were wrong.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

There aren't too many operational funiculars around, but Pittsburgh has two!

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Francis Julius LeMoyne built this crematory in 1876; he was the third person to be cremated here.

This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

This library and museum is dedicated to the life and literature of the Indianapolis native author.

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

An abandoned 1920s-era stretch of cabins now overshadowed by the 66 Motel.

This once-booming Gold Rush town is now home to a herd of feral donkeys.

A series of labyrinths in the Nevada desert inspire meditation and calmness.

A Saint Nicholas-themed ghost town in the Mojave desert.

Experience a charming 1930s version of "infotainment."

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

In a grove of fast growing walnut trees outside Paris, Illinois, a marker shares the story of a fictional road building culture.

Modeled after the labyrinth in Chartres Cathedral, this small-town Indiana memorial labyrinth sits half a world away.