A tiny red pebble marks what may be the quietest outdoor spot in the United States.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The highest point in Washington state is a volcano covered in glaciers.

Outside this souvenir shop is a statue of Bigfoot composed of volcanic ash, and plenty more to see inside.

This scenic gorge is named after one of the most famous Bigfoot attacks in pseudohistory.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

Museum with an extensive collection of Cray supercomputers and related artifacts.

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

Come for the giant taxidermy lion, stay for the knick knacks at this Minneapolis curiosity shop.

This lab's maddening silence is good for business but bad for sanity.

A museum dedicated to the exploring past, present, and future innovations.

Brain collection and database that narrows the gap between man and animal.

The world's largest anatomically accurate brain sculpture.

Abandoned Nazi train station turned underground astroparticle laboratory.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

A massive, secret marina for the Nazis' most formidable weapon in the Atlantic.

The haunting concrete remains of a Nazi pebble crusher can still be found in this small French commune.

Built to hold the worst of the worst of the Nazi war prisoners.

This gravesite in the Amazon Rainforest was left behind by a failed Third Reich expedition.

World War II-era Nazi compound nestled in the Santa Monica hills.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

On the side of Arkansas' Great River Road stand the remains of a forgotten World War II POW Camp.