city, North Rhine–Westphalia Land (state), northwestern Germany. The city extends for 10 miles (16 km) along the steep banks of the Wupper River, a right-bank tributary of the Rhine (Rhine River), northeast of Düsseldorf. Formed as Barmen-Elberfeld in 1929 through the amalgamation of the towns of Barmen, Elberfeld, Beyenburg, Cronenberg, Ronsdorf, and Vohwinkel, the name was changed to Wuppertal (“Wupper Valley”) in 1930. Barmen and Elberfeld, mentioned in the 11th and 12th centuries, jointly received the monopoly for yarn bleaching for the Bergisches Land in 1527. The introduction of ribbon making and linen weaving in the 16th century and of lace making (1750), silk weaving (1775), and red dyeing (1785) gave added impetus to the textile industries of those towns. The system of civic poor relief introduced in Elberfeld in 1853 was long regarded as a model throughout the world. A unique monorail suspension railway was built along the Wupper River at the turn of the 20th century in order to serve Barmen, Elberfeld, and the other towns.

Wuppertal's textile industry, though diminished, is still important. The city also manufactures chemicals, plastics, and metal and electrical-engineering products. Wuppertal was severely damaged in World War II but was subsequently rebuilt in parallel terraces on the river valley's slopes, with numerous parks and public gardens and a well-known zoo. The city also features a university-level technical school and several museums. Pop. (2003 est.) city, 362,137; urban aggl., 840,648.