there was an old bunker built in 36
http://en.wikipedia.org/wiki/Fuhrerbunker
The complex was built in two distinct phases, one part in 1936 and the other in 1943. The 1943 development was built by the Hochtief company as part of an extensive program of subterranean construction in Berlin begun in 1940. The accommodations for Hitler were in the newer, lower section and by February 1945 had been appointed with high quality furniture taken (or salvaged) from the Chancellery along with several framed oil paintings.
but do you refer to the papere where it states haubtquartier ??
that just mentions where the gold cross was issued, not where it was found