A perron leads up to the ancestry hall, where one enters the Count's Hall (), which covers the entirety of the southern wing. The rib vaulting of the Count's Hall, adorned with grisailles by Stüler depicting the history of the House of Hohenzollern and pointed-arch windows, is supported by eight free standing red marble columns. Below the Count's Hall is the old castle kitchen, today a treasure chamber. Next to the Count's Hall is the Emperor's Tower and the Bishop's Niche, following the library decorated with murals of the Hohenzollern history by Wilhelm Peters. The Margrave's Tower contains the King's parlor, also referred to as the Margrave's room, contrary to Stüler's terminology.