Located in La Villette, Paris's biggest park, La Géode is an Imax cinema within a 36-meter-diameter sphere composed of about 6,430 approximately equilateral steel triangles. It's like a big spherical mirror, part of La Villette's "City of Science", next to the "City of Music". The park, designed by Bernard Tschumi, contains 35 architectural "follies" arranged on a grid.