Instead of gold, King Frederick II's library is adorned with delicate silver-plated Rococo carvings, ornate mirrors, and polished wooden display cabinets.
King Frederick II was the one who expanded this palace massively, building the New Wing which housed the Golden Gallery.
He was better known as Frederick the Great. This title was given to him by others during his lifetime due to his staggering military achievements, including the most famous Seven Years War.
During the Seven Years War, he fought off a massive coalition of Russia, France, and Austria simultaneously.
Prussia was outnumbered and nearly destroyed, but eventually emerged victorious, which cemented King Frederick II's reputation as a military genius.
Nevertheless, he was famously modest about such honours and actually preferred to call himself "the First Servant of the State."