Ka cika wannan magana: Da ya ƙaura zuwa Vienna a shekara ta 1544, ya yi hidima ga birnin, fadar sarki, da kuma 'yan ƙasa. Birnin ya yi amfani da shi a shekara ta 1547 don bunkasa zane-zane don bastions, don ƙirƙirar ra'ayoyin Vienna, da kuma samar da shirin don birnin bayan da
Kewaye da Vienna. Wadannan ra'ayoyin sune na farko da aka ba da su bisa ga sikelin, kuma shirin birni mai zagaye shi ne na farko da aka samar ta hanyar triangulation, tsarin binciken da Hirschvogel ya bunkasa. Majalisar Vienna ta aike shi don bayyana aikinsa ga Ferdinand I a Prague da Charles V a Augsburg; Ferdinand ya ba shi fansho na 100 "gulden" don shi.