Start your search for a cheap car rental near Sayn Castle by selecting your vacation dates and pick-up and drop-off locations. That’s how competitive a car rental can be around this well-known attraction, but there are a range of factors that will determine how much you pay — your vehicle class is just the start. Whatever your budget and preferred car type, Expedia has unbeatable offers from a variety of car rental companies that’ll get you behind the wheel for less.