Heritage Open Day: A guided walk of the milling history of Alston. Meet at the Spar car park to start this tour of Alston and learn the history of its corn mills - Low Mill, High Mill and Bridge End Mill. There were five corn mills on Alston Moor, two in Alston itself and another just outside. We’ll be finishing at the High Mill, which still retains many features of its working life. There are also a few stories of its life as ‘the secret factory’ during the Second World War and as a factory to make precision metal castings, such as golf club heads that were famous the world over.