This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The first declared National Monument in the United States.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

A celebrity from the late Cretaceous period.

There’s a hidden military meme engraved on the World War II Memorial.

The trials and tribulations of marking Poe’s grave.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

The Boston square dedicated to the dark poet who was born nearby.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The only structure left with direct ties to the Salem witchcraft trials of 1692.

One of the few surviving "Wigwam"-themed motels.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

This lagomorph-obsessed Route 66 emporium is home to a giant jackrabbit that sits in a bunny graveyard.

This modest post office sits on the site of H.H. Holmes' famous murder castle.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

An experimental, automotive replica of Stonehenge.

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

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

A mysterious and terrifying public art goblin seemingly meant to inspire local legend.