No trip to Heidelberg would be complete without a visit to the castle. Dominating the city from the brow of the hill, the castle offers breathtaking views over the old town and the River Rhine. The castle is host to the Schlossfestspiele castle pageant and also the fantastic firework displays that illuminate the castle several times a year. Built over a period spanning three centuries, the castle developed from being a simple medieval fortress into a splendid Renaissance palace. A royal structure nestled amid bucolic settings, the castle is one of the most spectacular sights to see in Heidelberg.