Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

Tourists who rely on a transit map to find the iconic Beatles location often end up in a far-off neighborhood.

Preserved behind glass, the ruins of a medieval building used to store human remains.

Send a postcard while vacationing with Satan.

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

The biggest and deepest Cold War bunker open to the public can be found in southeast England.

A building that survived WWII, possibly on the virtue of its name alone.

These barriers stand as stark reminders of Northern Ireland's troubled past.

A 12th-century Italian skirmish gets reenacted with 500,000 pounds of flying citrus.

A landmark in the history of technology and computing is hidden in a tiny Baroque chapel.

The intricate geometry inside this Baroque-style dome was designed to create "terror of the human soul."

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.

A museum marks and documents the site of the Titanic's launch.

An Irish peat mine has become a stunning sculpture park.

Hidden in Carnfunnock Country Park is a lasting testament to the Normans who once settled in the region.

A boulder in the Churchyard of Down Cathedral marks the legendary burial place of "The Apostle of Ireland."

A brisk climb up this solitary peak leads to the origin story of a towering figure in Irish history.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

This massive monument has been telling the time for 150 years—at a slight angle.

Step into Narnia at this small park featuring statues from "The Lion, the Witch, and the Wardrobe."

The only monument to name all of the passengers and crew who died on the RMS Titanic.