It would take 35 firetrucks to fill this enormous glacial pothole.

Remember and reflect at this 9/11 memorial site.

An abandoned 1920s school with a mysterious history.

Smack in the midst of coal country, this collection provides a peoples' history of Appalachian miners' heritage.

A humble plaque marks the site where the country music legend was found dead in his Cadillac.

The tallest waterfall in West Virginia.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

Below the altar in Saint-Willibrord Basilica rests the mortal remains of Luxembourg's patron saint.

An assortment of armored tanks and Howitzer cannons in the middle of the Sonoran Desert.

Semi-recognized center of the world, with many oddities.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

This once bustling boomtown hotel is now the hottest spot in Nevada for ghost hunters.

"Only the devil could play golf here."

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

Odd outsider art installations surround a Gold Rush-era ghost town.

The rocks in this arid basin leave trails of movement behind them.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

A massive hydrovolcanic explosion left a half-mile wide crater in Death Valley.

A roadside park in eastern Maine first marked the halfway point between the equator and North Pole with a brass pin in 1896.

The first "applecore" style lighthouse in Nova Scotia.

This candy-striped tower is the farthest east you can go in the United States.