Continuing the theme throughout this list of repurposing old structures , Google ’ s Hamina data centre in Finland was previously a paper mill owned by the paper company Stora Enso . Google purchased the picturesque site , which lies on the Gulf of Finland , in 2009 , and has invested some € 1,400mn ($ 1,549mn ) so far , with a further € 600mn ($ 664mn ) planned for 2020 . Google touts the projects sustainability credentials , including its use of water from the aforementioned gulf . 81 www . gigabitmagazine . com