great view on the city of Schleswig, the Schlei and the fishing village of Holm. , one can view the bells above the platform with a special guided tour starting in the cathedral. Beside the Gothic Altar of the Magi (c. 1300) in the southern choir, a bronze baptismal font in the high choir by Ghert Klinghe (1480) and a four-metre-high wood carving of Christophorus, the cathedral's main attraction is the famous Bordesholm Altar. The cathedral in detail The Petri Portal Access to the cathedral is granted through the romanesque Petri Portal, dating back to 1180. A variety of materials were used for the portal's construction: granite, red sandstone from Skåne, limestone from Gotland and tuff from the Rhineland. On the Tympanum, Christ is depicted amongst evangelists and saints. Presumably, the one holding the key is the disciple Peter, and the other one who is given the scroll with the Christian mission, is St. Paul. Beside the portal, there is a weathered sculpture of a lion; another one can be found on the outer wall of the sacristy. The sacristy The sacristy, build around 1480, first served, indeed, as sacristy and conference room of the cathedral chapter (; an entity similar to a parochial church council that is tasked with the cathedral's day-to-day religious work) and since 1567 as classroom for the cathedral's school. After the Reformation, it was converted to a Fürstengruft (tomb for the princes) as tomb for the dukes of Holstein-Gottorp. The High Choir Bishop Berthold arranged for an expansion of the High Choir at the end of the 13th century. Also, frescos were added, depicting the Annunciation, the Coronation of Mary, St. Catherine, St. Philippus, St. Peter, Deesis and angels. The choir banks were manufactured by an unknown artist working under the pseudonym Magister rusticus at the beginning of the 16th century. The Schwahl The three-winged cloisters at the northern end of the nave, were constructed from 1310 to 1320, called the Schwahl. The name has its root in the Danish-Low German dialect and means "cold alley". It was used mainly for processions that left and re-entered the church on that way. Here, restored frescos from the church's foundation can be found. They show the life of Christ as well as a selection of legendary creatures. During Advent, a small art market takes place in the cloisters. The Brüggemann-Altar The oak wood altar, carved by Hans