A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

At 11,500 feet in elevation, there is no toilet in the state closer to the sky than this one.

A collection of 16,000 antlers crammed beautifully into a small shed.

It’s hard to believe this hostile landscape was once a health resort.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

The largest land animal skull ever discovered.

The taxidermied body of a bear that was a casualty of a drug trafficker’s bizarre death.

Cute manhole covers commemorate the hometown of the real-life Ash Ketchum who created Pokémon.

From a canyon-like gorge, more than 20 million gallons of water emerge every day, while a smaller spring drips down, creating the illusion of an endless, gentle waterfall.

When an ancient supervolcano erupted, some of Nebraska's prehistoric animals were forever preserved in ash.

America's smallest town is run by its single citizen/mayor/librarian/bartender.

This 4,000-acre restored grassland in northern Illinois is home to a range of native flora and fauna, from clovers to plovers to a herd of bison.

A wondrously macabre treasury of obscure antiques and unusual oddities.

Part of a highway network meant to connect Miami to Montreal, this 10-mile stretch of road made from red bricks is still around 100 years later.

Cross the Continental Divide through an old railroad tunnel, and ride back to the top on a shuttle.

The secluded site of a 1943 plane crash and amazing rescue is only accessible by hiking through the woods.

This oddity shop contains everything from antique tools to a human skeleton.

Two World War II aircraft lie within the jungle around this abandoned runway.

A cave interior in the shape of the ancient rhinoceros, created by lava cooling around its carcass.

A 115-year-old restored German dining hall awaits those who venture beneath the Minnesota State Capitol.

What's a diner from the 1939 World's Fair doing in a remote Utah mountain town?

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

Evanston's historic railroad complex saved this rail town from reaching the "end of the line."