A medieval military street hidden beneath a charming French fishing village.

This strange moor has a song written about it, Bronze Age carvings, and an alien sighting.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

The only surviving leech house in the United Kingdom was a home for bloodsucking worms until the 1900s.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

The art museum is decorated with creatively remodeled pre-Nazi swastikas.

One of downtown Berlin's last reminders of its Communist past.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

The nearly 200-year-old folly has a secret spiral staircase hidden in one of its pillars.

A statue honors the children who fought Nazis in Poland.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

A close look reveals that the Scottish monument is just slightly off-kilter.

A cross marks the spot in a small Scottish village that claims to be the exact center of the country.

One of the most controversial statues in Romania is an emperor with no clothes.

A surreal statue honoring Prague's favorite literary son.

Swedish mice can dine at the Nuts of Life restaurant or take a date to the amousement park.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

A sea cave with a waterfall and Viking past

A sweet symbol marks the place where torturous executions were once carried out.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

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

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.