This unassuming riverbank is Missouri’s first designated site in the National Underground Railroad Network to Freedom.

An abandoned factory along the Mississippi coated by a giant mural.

A chessmaster's dream destination.

A kitschy, creepy St. Louis mainstay.

A big museum full of little worlds.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

This natural sea cave hides a small wonderland of natural turquoise beauty.

The glowing blue Nymphaeum of Emperor Tiberius.

Stalactites and stalagmites in a beautifully lit cave.

Grotto replete with mystical designs laid out in glued shell mosaics.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

This wooden chair dates possibly back to the 15th century, and commemorates a local legend.

Explore the legends surrounding these mythical sea creatures inside this museum.

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

The famed amusement district marks the beginning of summer with a wild procession of nautical creatures.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

Reportedly 1,400 years old, this may be the first of the Fiji Mermaids.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

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

The Indian capital of black magic and witchcraft.

Largest magic museum in the United States with more than half a million pieces of memorabilia.