The creation of New Lanark is linked to the use of the Falls of Clyde to power new cotton-weaving centres. In 1800, its creator, David Dale, sold the weaving houses to his future son-in-law, Robert Owen, a social reformer who took charge of the factories for the next 25 years, implementing a series of social experiments. He created an apprenticeship building, village store and school. Cotton was produced here until 1968 and now this "model workers' village" is a UNESCO World Heritage Site and open to visitors.