Unlike most other cities, Strasbourg's collections of European art are divided into several museums according not only to type and area, but also to epoch. Old master paintings from the Germanic Rhenish territories and until 1681 are displayed in the Musée de l'Œuvre Notre-Dame, old master paintings from all the rest of Europe (including the Dutch Rhenish territories) and until 1871 as well as old master paintings from the Germanic Rhenish territories between 1681 and 1871 are displayed in the Musée des Beaux-Arts. Old master graphic arts until 1871 is displayed in the Cabinet des estampes et dessins. Decorative arts until 1681 ("German period") are displayed in the Musée de l'Œuvre Notre-Dame, decorative arts from 1681 to 1871 ("French period") are displayed in the Musée des Arts décoratifs. International art (painting, sculpture, graphic arts) and decorative art since 1871 is displayed in the Musée d'art moderne et contemporain. The latter museum also displays the city's photographic library.

Answer this question, if possible (if impossible, reply "unanswerable"): When was the Musee d'art moderne et contemporain finished?
unanswerable