With some awesome road trip options available in the surrounding area, renting a car makes good sense. Without one, it wouldn’t be half as easy to explore everything that Ludwigshafen, 18 miles away, has to offer. Planetarium Mannheim ought to be at the top of your list here. Mannheim Water Tower and Luisenpark Gardens are fantastic attractions too. Don’t skip Mannheim either! Just 19 miles away, Planetarium Mannheim, Mannheim Water Tower and Luisenpark Gardens are essential stops here.