Bishop's Palace was built on the site of the ancient ancient buildings - in the basement of the fortress have found traces of the Roman buildings. The oldest part of the fortress is under the tower - the so-called saving the corridor and adjacent room with a cross vault. Attached to the 1481-86 biennium. close to the eastern corner of the two-storey Gothic chapel tower is a rare example of fortress chapels.

After mohachskogo defeat in 1526 the fortress fell into the disposal of the military .  Because of the constant threat from the Turks it strongly reinforced .  The largest operation of this kind carried out according to the plans of the Italian Pietro Ferrabosco .  Despite this, 29 September 1594 g .  the fortress was captured by the Turks .  Four years later, on March 28, 1598 .  it was returned, but the bishops were able to return to her much later, only to the middle of the 18th century .  Bishop Franz Zichy (1743-1783) spent the restoration work and gives the building a modern form .  Recent reconstruction of the fortress ended in 1984 .  In the process of rebuilding the walls appeared fragments of the facade of the tower, which was restored .  In 2004 he opened a permanent exhibition dedicated to the Bishop Vilmos aporia, who was shot in the basement of the fortress of Soviet soldiers in 1945 .  The exhibition tells the story of his life, work and martyrdom .  Along with the pages of his diary are presented objects and documents, the exhibition is framed music and light effects .