A comprehensive archive of Hallmark Holiday ornaments.

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

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

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

“Live hard, ride fast, eat pizza” at this joint filled with Evel Knievel memorabilia.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

Nicknamed the "Grand Canyon of the North," this open-pit mine in Minnesota has a much shorter history.

This small, but beautiful waterfall has attracted visits from artists, composers, and two United States presidents.

Concrete strongholds stand guard over the Golden Gate.

Art Deco stylings conceal the true nature of this bridge.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

When flour explodes, it's not a pretty sight.

These curious caverns have been home to mushrooms, gangsters, and disco.

This quirky museum has a collection of more than 15,000 bobblehead dolls.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

I Street Bridge is the heaviest swinging center bridge in the United States.

This water tower has been a staple of the Rochester skyline since 1931.

An abandoned bus station transformed into a museum dedicated to the history of Greyhound Lines, in the place where it all began.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.