If you’ve been watching Downton Abbey, The Crown, Bridgerton, or a lot of other British dramas on Britbox or elsewhere, then European Waterways has a cruise for you. With the largest fleet of luxury hotel barges in Europe, European Waterway has designed a Thames River cruise that visits many of those locations on its eight-passenger Magna Carta barge, pictured above. The Magna Carta will cruise to many of the South of England’s most picturesque sites, including royal palaces, aristocratic estates, and centuries-old riverside villages. One highlight is a tour of Highclere Castle, scene of Downton Abbey’s Crawley family, and the…