Wikipedia explains: "Matlock Bath is a village and civil parish situated south of Matlock on the main A6 road in Derbyshire, England, approximately halfway between Buxton and Derby. The population of the civil parish as of the 2011 census was 753. Originally built at the head of a dead-end dirt road running alongside the valley of the River Derwent from Matlock itself, the locality developed in the 19th century as residential and a spa town and still thrives on tourism. Development was and is very restricted due to the steep hillsides, with the majority of buildings on one side of the valley with only footbridges across the river. The road was upgraded and made into a through-way, now designated A6, avoiding the previous old coaching road approach to Matlock from Cromford over very steep hills near to the Riber plateau area."