The Führerbunker, translated to English means "Leader's bunker" was part of a subterranean bunker complex which was constructed in two major phases, one part in 1936 and the other in 1943. This bunker was a defensive military fortification designed to protect the inhabitants from falling bombs or other attack; in this case, the Führerbunker was to protect Adolf Hilter during WWII, and was the center of the Nazi regime. Hitler married Eva Braun here during the last week of April 1945, shortly before they committed suicide.
The Bunker can be found at Wilhelmstrasse 77 near the corner of In den Ministergärten and Gertrud-Kolmar-Strasse, a short walk from Potsdamer Platz. It may be difficult to find independently as it is located in a grey apartment block backed onto a desolate car park, bordered by small wooden posts. You will find an information sign detailing the history of the site, which replaced a plaque that was there in 2006; otherwise, there is nothing else to see or discover. The site may be useful for history or war enthusiasts, as part of a tour or with a map.
Post-war, the site was largely undisturbed until 1988. During reconstruction of that area of Berlin, those sections of the old bunker complex that were excavated were for the most part destroyed. Some of the corridors of the bunker still exist today, but are sealed off from the public.