He is one of the most orig­i­­nal ab­s­­tract artists of the twen­ti­eth cen­­tu­ry. The Mu­se­um Lud­wig is show­ing the work of Ot­­to Fre­undlich (1878–1943) in a big ret­ro­spec­­tive.

Ot­to Fre­undlich. Kos­misch­er Kom­mu­nis­mus