We present a science centre established in Genoa on an agreement between Municipality of Genoa and Department of Physics of University of Genoa. The aim is to offer children, young people and community an opportunity to approach science in a playful way. The centre staffs guide the visitors through the exhibits, attracting their interests towards the most amusing aspects of the phenomena. According to the principles of constructivism, kids and children are encouraged to handle objects, play with geometrical shapes, observe materials collected from natural and human environment and make "discoveries", and students can take advantage of the visit and from the exhibits to study in depth a specific topic afterwards in their class, thus preventing the aridity of a purely formal presentation of the discipline, while a general public can realize how much science affects people's lives, enjoy its fun aspects and meet scientists during special events. (Contains 11 figures.)