The central and oldest part of the palace is the domed Altes Schloss (Old Palace), which is also called the Nering-Eosander-Bau after its two architects. Here you can visit the apartments of Frederick I and Queen Sophie Charlotte. The rooms are decorated in a sumptuous Baroque style with plenty of stucco, wood paneling, gilded ornaments and frescoes. Unfortunately not all frescoes have been restored. Some ceilings are plain white since restorers don't know what the frescoes originally looked like.