Where America's first doomsday cult awaited the end of the world.

This historic Illinois "Muffler Man" has been converted from axe-touting lumberjack to rocket-wielding space ace.

Moving, mind-blowing metal sculpture work of an outsider artist.

This folk art wall claims to be the world's one and only memorial to the bygone age of hippies.

Even with only two residents and one building, this tiny Illinois town is famous for its burgers.

The remains of a religious colony, its amusement park, zoo, and baseball empire.

This museum remembers an apocalyptic cult that became more famous for baseball than religious radicalism.

The only freestanding table rock formation east of the Mississippi.

Now in disrepair, this 19th century station was a stop on of the famed B&O Railroad.

A miniature world of concrete and stone in Springfield, Ohio.

The longest navigable underground river in the United States is home to countless blind and albino animals.

A real flying saucer, contracted by the U.S. Air Force.

If astronomy had a ghost, it would look like this observatory.

Ornate limestone building now filled with geologic specimens, and more.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

Modeled after the labyrinth in Chartres Cathedral, this small-town Indiana memorial labyrinth sits half a world away.

This Indiana walk of fame honors music legends with record-shaped plaques in the pavement.

A small town museum celebrates the history of the Ohio county that produced Annie Oakley and other famous figures.

One of the largest collections of holy relics in the country.

The final resting place of the most famous sharpshooter.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.

A modern-day wunderkammer dedicated to Indianapolis history, Afrofuturism, and musical vibrations.

A medical facility that has been kept frozen in time.