, Edmund Collein,
Lothar Bolz, Waldemar Alder, Walter Piesternick,
Kurt Liebknecht and Mokka-Milch-Eisbar, with
Hotel Berolina in the background From 1930, Collein worked in
Vienna, building apartments for workers' housing associations, and from 1938 he was employed building hospitals in
Munich and
Berlin. The purpose of the visit, from 12 April to 25 May 1950, was to study Soviet town planning methods in order to develop strategies for rebuilding post-war East Germany. The group was led by
Lothar Bolz, the East German Minister of Construction. The delegates were
Kurt Walter Leucht, from the
Dresden urban planning office, Collein as head of the East Berlin city planning office, Walter Pisternik, head of department of the Ministry of Construction, Waldemar Alder from the Ministry of Industry and
Kurt Liebknecht, the director of urban planning and building at the Ministry of Construction. They went to
Moscow,
Kiev,
Leningrad and
Stalingrad. The academy was a government agency that operated as the central research institution for architecture and construction in East Germany. Together with
Josef Kaiser and Werner Dutschke, Collein was involved in the second phase of construction of
Karl-Marx-Allee (1959–1965), on the section between
Strausberger Platz and
Alexanderplatz. The street was originally called
Große Frankfurter Straße, and between 1949 and 1961 it was
Stalinallee. It was a flagship building project of East Germany's post-World War II reconstruction programme. Shortly before
German reunification on 3 October 1990, the East German government had the whole of Karl Marx Allee listed as a protected monument. In 1958, Collein became head of the Institute for District, Town and Village Planning at the
Bauakademie der DDR. Between 1963 and 1971 he was chairman of the Academy's Economic Council. In 1966 he succeeded
Hanns Hopp as president of the (Federation of Architects of the GDR), and held the post until 1975. He was also Chairman of the Advisory Council for Construction for the
Council of Ministers of East Germany from 1955 to 1958. From 1973 to 1978 he represented the
Bund der Architekten der DDR at the
International Union of Architects. ==Awards==