A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

Over thousands of years, this slot canyon was carved out of the bed of an ancient lake.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

A hundred-year-old museum filled with giant physics toys and experiments designed by grad students.

Picturesque and haunting, these 160-year-old stone ruins on top of a bluff are the only remains of a settler's legacy.

A wondrously macabre treasury of obscure antiques and unusual oddities.

This graveyard is home to the so-called "Witch's Circle."

Dozens of rockets and missiles are on display outside a testing facility in the Utah desert.

This former POW camp was transformed into a Cold War missile installation.

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.

Gorgeous cave resemble a winter wonderland.

An unusual assortment of art, furniture, and other curiosities.

Chilly air billows out from the entrance of an abandoned mine on a steep hillside, providing a refuge for Ice Age fauna and flora.

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.

One of the oldest continually operated libraries in Kansas.

This unconventional used book store was once in the news for the surprising act of burning books.

A wonderful collection of all things Oz is nestled in the heart of Kansas.

Haunted dolls, macabre artifacts, and more make up the collection of the “most haunted museum in the world.”

The largest collection of historical roller skates in the world.

Underneath downtown Lincoln resides a network of caves that was also the city's first brewery.

Enjoy a tour of oddities and makeshift monsters at this souvenir store with an offbeat sense of humor.

This museum started by a curious collector is now a place for believers and skeptics alike.

In addition to fishing and camping, this spot in Nebraska’s Sandhills is one of the world’s darkest places.