The pockmarks across the building's facade are remnants of the Blitz.

The colorful stairs are made with marble from the world's major quarries.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

Come for the oysters, stay for the priceless art honoring inventors across history and Scotland's favorite outdoor sports.

A collection of haunted objects and macabre oddities under one roof.

These engineering masterpieces are a dominant feature of the Belfast skyline.

A small plaque highlights the damage caused by German air raids during World War II.

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

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

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

This astronomical clock is the second oldest in England.

The final resting place of one of the most influential modern occultists.

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

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

One of the largest lenses of its kind ever created, this former ship beacon has been brought down to Earth.

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

The last Victorian market in Belfast.

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

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

A writer's tiny retreat built from salvaged shipwreck timbers.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

More than five miles of underground passageways.