At junction 23 of the E411, the Euro Space Center is a family-oriented mix of fun and education including a 75-minute series of movies and gadgets followed by a five-minute simulator ride. For €6 extra a bungee-style contraption offers the sensation of moon walking at one-sixth of Earth’s gravity, and a planetarium show is another €4. Outside (no ticket necessary) there’s a labyrinth quiz and a solar system built to scale.