This curious, round temple is the oldest still-standing marble building in Rome.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A 2,000-year-old Adena burial mound located along a busy street in Columbus, Ohio.

The largest earthwork effigy in the world.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

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

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

Bison, America's national mammal, are staging a slow comeback in Ohio's prairie parkland.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

A monument to a Native American leader who was known for never breaking a promise and met his end after signing a deal with white settlers.