Landsberg am Lech (länts`bĕrk äm lĕkh) or
Landsberg, town (1994 pop. 23,810), Bavaria, SW Germany, on the Lech River. Textiles, metal goods, and paper are manufactured. Its fortress served as a political prison; Adolf Hitler wrote Mein Kampf while imprisoned there in 1923–24, and numerous convicted Nazi war criminals were held there after 1945.