The spot where three Protestant clergymen were burned at the stake during the reign of "Bloody Mary."

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

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

Belfast's namesake river still winds below the city center, hidden from sight.

The last Victorian market in Belfast.

Two plaques commemorate the site of Shakespeare's first theatre.

The 28,000-year-old specimen is remarkably intact.

The little-known second castle that William the Conqueror built in York.

This network of narrow, medieval passages has the most delightful name.

These upturned herring boats make nifty storage sheds for fishing goods.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

A Maori village obliterated by an 1886 volcanic eruption.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

Scotland still bears an enormous scar of its Roman past.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

Experience what life was like in Ireland during the Viking and medieval ages.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

A set of medieval stained-glass windows tell the gruesome story of a Viking siege.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

Tijuana's legendary jai alai or "basque ball" palace is now a massive music venue.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.