Berlin Observatory
The construction of the new Berlin Observatory proceeded from a cabinet order of 10 November 1830 according to the design of Schinkel. An approximately one hectare plot was acquired at a price of 15,000 Thalers in the present-day area of Berlin-Kreuzberg. The foundation stone was laid on 22 October 1832 and the observatory was ready by 1835, on the area currently bounded by the streets ″Friedrichstraße″, ″Besselstraße″ and ″Lindenstraße″. The southern end of the ″Charlottenstraße″ was later named ″Enckeplatz″ in honor of the director at that time and the observatory acquired the address of Enckeplatz 3 A (now: ″Enckestraße 11″).
Diedrich Wattenberg
In 1946 the Treptow Observatory was renamed to honour Friedrich Archenhold, and on 1 June 1948 Diedrich Wattenburg was appointed Director of the Archenhold Observatory in succession to , who a couple of years later moved to Heidelberg following the foundation, in 1949, of West and East Germany as separate stand-alone states. The observatory was in Potsdam which since 1945 had been part of the designated Soviet occupation zone and from 1949 till 1989 would be included in the German Democratic Republic. In addition to his Potsdam appointment, in 1948 Diedrich was appointed President of the Bremen centred , an astronomical group of which he had been a member since 1927. He also belonged to the Berlin Astronomical Society.