Proper noun
A thoroughfare in central Berlin, formerly the location of the German Chancellery and Foreign Office.
(metonymically, historical after 1945) The German government or Foreign Office.
Source: en.wiktionary.orgThe Warme Damm is a 4.5 hectare park on the east side of Wilhelmstrasse and south of the State theater and Kurhaus which features a lake, a fountain, various statues, and large grassy areas. Source: Internet
The downtown area is bordered on the north side by Taunusstrasse, which has once featured many antique stores. citation The east side is constrained by Wilhelmstrasse, created by Christian Zais. Source: Internet
German Diplomatic Relations 1871–1945: The Wilhelmstrasse and the Formulation of Foreign Policy. Source: Internet