Breathtaking and huge 430 year old maps of Italy.

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

In which a local geological marvel becomes a quaint roadside attraction.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

This popular bar has been blurring the line between normal and edgy for more than 75 years.

This former coal gasification plant found a curious second life as a popular public park.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

A Rocky Mountain city provides a happy ending for a pinto pony and his Brobdingnagian red chair.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

This 880-acre facility is home to a massive collection of vintage motorcycles and cars, as well as a 2.38-mile race course.

Buttermilk biscuits so nice, you'll say “yay” twice.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

The land is home to swimming ponies and a legendary 18th-century treasure.

This museum explores the grim reality of life in the earliest British colonies in America.

This giant disembodied horse head seems to balance impossibly on its nose.

A glittering Thai Buddhist temple in suburban Pennsylvania.

A Nesting Doll of Churches.

Jesus' footprints and the first catacombs in the world.

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

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

The walls and streets of the ancient city are peppered with penises.

Ancient snack bar of the Roman Empire re-opened.