Steam on the Settle and Carlisle chronicles the history of the 72-mile Settle to Carlisle railway, opened in May 1876. Called one of the three great wonders of the north, the line passed through the Ribble Valley into the Vale of Eden. A journey on former LNER A4 locomotive 'Sir Nigel Gresley' recaptures the magic of this historic line. 'Railway City' focuses on the city of Carlisle, and the place it holds in the history of British railways. The Newcastle and Carlisle line was constructed in the 1830s, and the Citadel station opened in 1847.