Perched atop the entrance to the IJ Tunnel is the unmissable slanted-roof green-copper building, designed by Italian architect Renzo Piano, almost surrounded by water. Its rooftop square has great views and water- and wind-operated hands-on exhibits. Inside, everything is interactive, with three floors of investigative mayhem. Experiment lifting yourself up via a pulley, making bubbles, building structures, dividing light into colours, racing your shadow and discovering the teenage mind.
Piano conceived the design as the inverse of the IJ Tunnel below. Inside, Piano's design reflects a 'noble factory', with exposed wiring and pipes.