The Barbarossa Chandelier was installed under the cupola in the Roman Catholic church in what state?
Barbarossa Chandelier: The Barbarossa Chandelier (German: "Barbarossaleuchter") was made on the order of Emperor Frederick I, nicknamed Barbarossa, and his wife Beatrice sometime between 1165 and 1170 and was installed under the cupola of the Palatine Chapel in Aachen Cathedral.
i don't know