On the left: the high-rise office building Tulpenfeld, 18 storeys tall, built in 1964 by architect Hanns Dustmann (1902-1979) from Düsseldorf, in order of Allianz AG. Until 1999 this building at B8 accomodated various federal ministries. Today it’s the location of the Federal Network Agency.
On the right: Langer Eugen, built 1965-1969 by Egon Eiermann (1904-1970). Up to 1999 this was the office building of West Germany’s deputies of the government. Nowadays the completely renovated building at the left bank of the Rhine is used by the United Nations (UN).
Before the DHL/Post Tower (162,5m) was built (2000-2002), Langer Eugen (114m high) was the highest office building between Bonn and Frankfurt.