At the beginning of the Sarntal Valley you'll find Runkelstein Castle, on the northern outskirts of town. You can easily get there on foot walking the lush green Talfer promenade or using a bike by taking the bike path. You can also hop on number 12 bus (Sunday Nr. 14), as well as the free shuttle departing from Walther Square (for further information contact Bolzano's Tourism Office). At the foot of the castle you'll find parking space for cars and bikes. Built in 1237 on a jutting edge of rock, the castle has been worked on and enlarged many times over and it boasts a collection of beautiful frescoes, depicting life scenes from court, hunting parties, knightly tournaments and scenes from everyday life. Literary depictions are not missing, as they also illustrate the adventures of Tristan and Isolda and those of King Arthur and his Knights of the Round Table. It is the biggest collection of profane frescoes and the best preserved one of the Middle Age. There are always some interesting cultural events going on at the castle, wich from time to time liven up the halls and court of Roncolo. A restaurant offers the chance to taste local dishes in a medieval setting.