This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

A small and surprising passageway in Saint Petersburg devoted to the Beatles.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

This hidden courtyard in the Andorran capital hosts a unique contemporary sculpture park.

The "Mona Lisa" of funerary art.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

Modern art commemorates one of the first military actions of World War II.

This antique thermometer honors the creator of the first universal temperature scale.

The world's oldest bookshop still in operation.

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

The world's first military tank was designed in this English city amid the stalemate of WWI trench warfare.

The charming collection illustrates life in Lincolnshire in the 18th through 20th centuries.

The oldest of the three remaining bridges in England with buildings on top of them.

Legend says this demonic carving inside a medieval cathedral was one of Satan's minions.

Modern commuters still pass through this 2,000-year-old Roman archway.

A lasting remnant of the London Blitz.

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

These relics of the city's past now exist as a prominent modern feature.

The final resting place for the remains of 143 Habsburg royalty.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Legends surround an ancient tree trunk riddled with nails for good luck.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Designed as a reminder of one of the darkest moments in Austrian history.