Frederick I has a strange encounter with…
1709 CE
Sophia Louise, in a white dress and with bloody hands, points at him saying that the plague will devour the king of Babylon.
As there is a legend of a White Lady foretelling the deaths of the Hohenzollern, the Prussian king takes his wife's outburst seriously and orders that precautions be taken for his residence city.
Among other measures, he orders the construction of a pest house outside the city walls, the Berlin Charité.