The Heidelberg Palace is a must see when visiting Heidelberg. To get there 🥾: you can take a cablecar from the old town. However, I would recommend to skip the queue and just enjoy the around 15min walk up. You will pass by beautiful old villas on the way. What to do 🏰: In my opinion the outside appearance of the castle is more beautiful than the inside. So it’s not worth to spend the entrance fee for a ticket inside. The garden around the castle is free to enter and has great views.