Heidelberg boasts 7000 parking spots.  6,999 of them are designed for vehicles 1.8m and lower in height.  It took us a good hour to find that last one, but find it we did.  It took another ten minutes to decide whether the sign said it was free after 2pm or if we had to vacate the spot after that time.  We decided to go with the first translation and hoped that the tow gene skipped a generation going back.  (Sorry Asher, I couldn't resist, lol)  

We hiked up towards the castle and spent a couple hours wandering the grounds.