Heritage Open Day: A guided tour by one of the company's professional tour guides will take you around the 120,000 sq. ft of retail shopping space, revealing the story of the mill, which dates back to 1824 when the mill was built and was known as Moscow Mill. A professional tour guide will explain the history of the mill and its connection to James Hargreaves, the inventor of the Spinning Jenny. You will have the opportunity to step back in time and see the replica Spinning Jenny and watch a demonstration on how it was invented by James Hargreaves in 1764, revolutionising the textile industry by allowing a single worker to spin multiple threads simultaneously, significantly increasing yarn production. After the tour, you are welcome to visit one of the three restaurants or purchase items from the deli, or ice cream bar and enjoy a picnic in the large outdoor wildfowl lodge.