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

A layered tribute to the work of mosaicist Isaiah Zagar.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

The only pig museum in the U.S. holds one of the world's largest collections of pig items.

A remarkably opulent mansion with a tragic history.

This mosaic-covered bar is brimming with curated curios.

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

A museum dedicated to man's boldest venture.

If there's another drive-through golf-cart bar in a bat-filled cave on top of a mountain, we don't know about it.

An unexpected but incredible collection of wildlife dioramas spanning rainforests, swamps, forests, and plains.

Tucked away between two 19th-century buildings, this small shop specializes in the macabre.

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

Community bookshelf of 25-foot-tall book spines.

Curious cave that stays a cool 56 degrees all year long.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

European castle ruins in an American state park are actually the product of death and grief.

The tragic reality of a town riddled with rumors of haunts, chemical spills, and serial killers.

Inside this wonderland of weird, visitors are treated to a collection ranging from skeletons to haunted artifacts.

A circle of giant painted vases in the former pottery capital of the United States.

An unassuming 13-acre park is home to over 12,000 roses.

This recycled wax museum may be the only one that features John Travolta in a Bible scene.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.