In April, 1945, as Russian and German troops fought — savagely, street-by-street — for control of the German capital, it became increasingly clear that the Allies would win the war in Europe. Not long after the two-week battle ended, 33-year-old LIFE photographer William Vandivert was on the scene, photographing Berlin’s devastated landscape. Vandivert was the first Western photographer to gain access to Hitler’s Führerbunker (translation: “shelter for the leader”) after the fall of Berlin, and a handful of his pictures of the bunker and the ruined city were published in LIFE in July, 1945. A few of those images are re-published here; most of the pictures in this gallery, however, went unpublished — until now — and illustrate the surreal, disturbing scenes Vandivert encountered in the bunker itself, and in the streets of the ruined, vanquished city beyond the bunker’s concrete walls.