A kaleidoscopic warehouse-maze of handmade neon signs.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

After a traumatic encounter with a six-foot eel, one Galway baker started making a daily loaf of sourdough in its shape.

A proud bronze billy stands as an eternal symbol of Ireland's oldest festival, where a goat is made king.

A standing relief of a Norman knight whose posture marks him as a Crusader.

The severed head of a 17th-century Irish martyr lies within an intricate golden shrine.

The oldest licensed distillery in Ireland.

Petrified footprints of one of the very first vertebrates to walk on land.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

This single room has survived the centuries with almost no deterioration.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

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

Ever hear of the Milazzo Cage?

A fortified medieval basilica on the Caelian Hill preserves extraordinary frescoes and one of Rome's most beautiful hidden cloisters.

A burial vault located under Tiber Island in the middle of the Italian capital.

This is the oldest Roman-made bridge in the city still existing in its original state.

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

One of the most important yet well-hidden museums dedicated to the history of medicine.