East England: Gainsborough Line Route: Marks Tey to Sudbury Journey time: 19 minutes You'll travel along the second largest brick-built structure in England on this line as you trundle across the 32 arches of Chappel Viaduct standing 23 metres high. Named after 18th century artist Thomas Gainsborough, the line is close to Gainsborough's House Museum, as well as the East Anglian Railway Museum.