Are you fascinated by the stars, constellations, planets and galaxies? Then do not miss visiting Galileo Galilei Planetarium. Planetario has been delighting wannabe astronomers of all ages since opening in Parque Tres de Febrero in 1968. Inside this giant, flying-saucer-shaped sphere are over 100 projectors showing close-ups of orbiting bodies. Interactive exhibits and telescope sessions reveal the wonders of the heavens. You can also see a lunar rock gifted by U.S. President Nixon.