The industrial city and university town of Wuppertal, finely situated in the Bergisches Land, consists principally of the districts of Barmen, Elberfeld and Vohwinkel, formerly separate towns, strung out along the narrow valley of the Wupper for a distance of some 20km/12.5mi.
In the Ennepe valley, 9km/6mi east of Wuppertal, is the Klütert Cave, one of the largest natural labyrinth caves in Germany, with a total length of 5.2km/3.24mi. It is used for the treatment of asthma.
Southeast of Wuppertal's Town Hall (Rathaus; 1913-22) is the House of Youth (Haus der Jugend), with the Municipal Library (periodic exibitions). In Friedrich-Engels-Allee are the Opera House and the Frederich-Engels-Haus (documentation on Engels, the co-founder of socialism; museum of the early industrial period. To the west, on the Hardt, is the Missionshaus, with an ethnographic collection.
South of Barmen rises the Toelleturm, with fine views over the Wupper valley.
On the western outskirts of Elberfeld lies the Zoo (open enclosures, with some 3,500 animals). To the southeast is the two-level Kiesberg Tunnel (upper carriageway 854m/934yds long, lower 1043m/1141yds).
The History Museum in Wuppertal has three components. It includes Friedrich Engel's house and a permanent exhibition, a museum of industrialization and a library.
Address: History Museum, Engelsstrasse 10, D-42283 Wuppertal-Barmen, Germany