These unique markers designate the route American forces took during the Liberation of France.

The Lone Star plaque hangs in a bombed-out bunker in Normandy to honor a Texan colonel's heroic actions on D-Day.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

Macabre astrological automaton clock dating to the late 1400s.

The first museum in the world devoted to sexual gadgetry.

Monument to a suicide protesting the Soviet invasion.

A mocking tribute to the past and modern leadership of Prague.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

This riverside restaurant has been serving customers since 1146.

The bronze uniforms commemorate the vital role of women during World War II.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

One part local history, 99 parts gruesome haunted house.

A hands-off space for graffiti artists to hone and display their skills.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

The Tudor-style cottage in the middle of the square is not quite what it seems.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.