Tom Tits Experiment is a science centre located in the municipality of Södertälje in Stockholm County, Sweden – and the first permanent hands-on science centre in the Nordic countries. It started as a temporary exhibition in the Södertälje Art Hall in 1985. Two years later, a permanent exhibition was opened in its current premises, which were previously used for industrial purposes by the company Alfa Laval. https://en.wikipedia.org/wiki/Tom_Tits_Experiment