The largest land animal skull ever discovered.

Direct, creative challenge to Mother Nature's winter wrath.

Native Americans built this circle of stones, which was used to predict astronomical events.

One of the first historical sites of an alternative universe was installed in the town of Paris, Illinois—which is now home to an annual spelling bee of Kcymaerxthaereal words.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

A mysterious light of unknown origin on the backroads of Missouri.

A Mormon place of exile in Missouri.

The remnants of an early American attempt at missile defense.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

This striking art museum holds an amazing series of curiosity cabinets.

A six-story-tall golden pyramid, surrounded by a moat.

Robots, lasers, and whoopee cushions, oh my!

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

Largest collection of mounted dinosaur specimens in the world.

Pyramid home to an obscure religious group that practices modern mummification.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

This chilly Canadian hotel has a four-month lifespan due to the unusual material it's made of.

Former laboratory of radical psychiatrist Wilhelm Reich.

A gothic church spire sits atop this skyscraper, the tallest church in the world.