Beautifully decorated tarot cards from the Middle Ages.

A magical place that lets you play in and explore the world of Studio Ghibli.

The legendary birthplace of the Japanese maneki-neko is dotted with hundreds of lucky beckoning cats.

The ancient tomb acts as a calendar that keeps perfect time.

A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

The real-life site of Ichabod Crane's infamous gourd attack.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

A genuine Tudor manor transported piece by piece from England.

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.

More than 450 years ago, an Italian nun became the first woman to paint the iconic subject.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

Roman politician Herodes Atticus built this nymphaeum to honor his wife, whom he may have murdered.

This ancient Roman arch misled treasure hunters for centuries.

Its interior is adorned with some of the best examples of early Christian mosaics.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

The yawning maw of this pagan visage is said to bite off the hands of liars.