The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

This concert venue and educational trailblazer transforms kids through music.

Stroll among more than 50 large-scale sculptures created by world-class artists.

This earthwork installation sits on a grassy hill, celebrating Iceland's past and present.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

A natural formation that resembles a camel resting in the New Mexico desert.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This boat represents the promise of undiscovered territory, a dream of hope, and progress and freedom for Iceland.

Once in disrepair, this popular Texas stop along iconic Route 66 has been restored to its past glory.

Possibly the world's only drive-in movie theater with an attached motel.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

A secret hatch containing two parchments was discovered in this statue over 40 years after its installation.

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

An unremarkable wooden wheel built into the side of one of Rome's oldest hospitals was part of a policy to reduce infant exposure.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

A massive marble foot is tucked away in a small alley near the Pantheon.

Plaques on its facade commemorate the Tiber's most destructive deluges.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

A striped 12th-century basilica sits in the countryside of Sardinia.

A visionary oral narration project brought new life to Jonesborough.