(1863–1929). German architect. He was involved in the design of several international exhibitions (e.g. St Louis, MO, 1904), but he is remembered primarily as an authority on town-planning, and, with Alfred Grenander (1863–1931), as a protagonist of Art Nouveau (or Jugendstil), mostly expressed in the bridges and stations of Berlin's elevated tramway system. A disciple of Sitte, he proposed plans for Greater Berlin (1910), and, with Gurlitt, founded Stadt-baukunst alter und neuer Zeit (Ancient and Modern Civic Design—from 1919).
From A Dictionary of Architecture and Landscape Architecture in Oxford Reference.