Louise and Martine have the distinction of being the oldest sex workers in Amsterdam. The 74-years-olds have accrued more than a century in the trade between them and are estimated to have pleasured some 355,000, greater than the population of Iceland. https://www.telegraph.co.uk/travel/destinations/europe/netherlands/amsterdam/articles/meet-the-fokkens-the-dutch-sex-workers-turned-tour-guides/