sentences:  In Bydgoszcz the Pomeranian Military Museum specializes in documenting 19th- and 20th-century Polish military history, particularly the history of the Pomeranian Military District and several other units present in the area.The city has many art galleries, two symphony orchestras and chamber and choirs.Bydgoszcz's cultural facilities also include libraries, including the Provincial and Municipal Public Library with an extensive collection of volumes from the 15th to the 19th centuries, and old books from Germany.