ST. LOUIS — It’s called the “most famous house in the world.” We’re talking about Highclere Castle, a British country house you probably know from 'Downton Abbey'—the wildly famous PBS series.

Travel 'Downton Abbey' castle: 7 reasons to visit Highclere Fans around the world were distraught when "Downton Abbey" ended its sixth and final season. Aunt Violet, Carson, Lady Mary, Spratt and ...

Add Yahoo as a preferred source to see more of our stories on Google. Highclere Castle is not just a film set; it can also be visited. Photo: Getty Images At the sight of Highclere Castle near London, ...