The Nazis were very fond of everything related to the occult sciences, esotericism and ancient artifacts. This love (most likely) came to them from Adolf Hitler, who spent a lot of money and effort in search of various artifacts.
Some of them he found and among them was the legendary Spear of Destiny, which was pierced by Jesus. In many German cities there were secret laboratories in which various experiments were carried out and the occult was studied. There was such a laboratory in Konigsberg (now Kaliningrad).
But when Soviet troops launched an attack on Konigsberg, the laboratory mysteriously disappeared. Many supporters of the unknown believe that the basements of the laboratory were flooded, and the entrance was printed with the help of powerful spells of the ancestors. Some researchers allegedly stumbled upon a wall that supposedly should lead to the dungeon, but it was solid. Maybe the Nazis actually possessed such means and were able to hide secret knowledge so that the USSR did not get it?
We will probably never find the legendary laboratory, which may contain important knowledge and ancient technologies, but it continues to excite the minds of many researchers.
