A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

These artificial caves crafted by ancient Romans were elaborate fish farms for moray eels.

This forgotten chalk mine was reopened thanks to a massive effort from the local community.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

A strange and haunting monument of unknown origin in the historic Graceland Cemetery.

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

This museum covers 10,000 years of Pre-Columbian Latin American history.

It's believed Matilda Fitzwalter's life was the basis for the famed literary figure.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

The Jewish diaspora shares a menu at this museum café.

The vaulted ceiling is home to a scurry of “squirrelgoyles.”

The biggest museum dedicated to insects in North America, one of the largest in the world.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

One of the world's largest ancient burial mounds.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

A sculpture of a salmon swimming through a brick building.

The remains of an entire Roman city can be explored in this interactive museum.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.