IMAGINARY is part of 7th European Congress of Mathematics cultural program. In a joint exhibition with “Views in 3-Manifolds” at Technische Universität Berlin IMAGINARY shows a big variety of mathematical exhibits, old and new. “Views in 3-Manifolds” is an exhibition by French math researcher and artist Pierre Berger of Université CNRS Paris 13. It aims to explore 3-manifold spaces of imaginary mathematics through images, sound and visualization installations.