The Bode Museum in Berlin is one of a group of museums on the Museum Island. It was designed by Ernst von Ihne and completed in 1904. Originally called the Kaiser-Friedrich-Museum after Emperor Frederick III, it was renamed for its first curator in 1956. True to the ethos of its founding director, Wilhelm von Bode, who believed in mixing art collections, it is now home to sculptures, Byzantine art, coins and medals. The presentation is both geographic and chronological, with the Byzantine and Gothic art of northern and southern Europe displayed separately on the first floor and a similar regional division of Renaissance and Baroque art on its second floor.
The sculpture collection shows art of the Christian Orient with an emphasis on Coptic Egypt, sculptures from Byzantium, Ravenna, of the Middle Ages, the Italian Gothic, and the early Renaissance. Late German Gothic works are represented by Tilman Riemenschneider, the south German Renaissance, and Prussian Baroque art up to the 18th century.
The Münzkabinett of coins is one of the world's largest numismatic collections. Its range spans from the beginning of minting in the 7th century BC in Asia Minor up to the present day. With about 500,000 items, it is a unique archive for historical research, while its medal collection makes it an important art exhibition.
Incomplete but long list of some of the most important museums in Germany by federal state here: https://en.wikipedia.org/wiki/List_of_museums_in_Germany