World's largest bell sits on the grounds of the Kremlin in Moscow.

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

Dozens of padlock-trees along the Moscow River.

Gargantuan home of Russian science.

An underground city of salt.

Christ's blood preserved in a Belgian town.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

Petting this mysterious iron monkey supposedly brings good luck.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

A museum designed by and dedicated to P.T. Barnum in the town where he is buried.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

World War II bunker still standing on the New Jersey beach.

Century-old shop, specializing in Occult products.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.