A royal meeting over a hidden hazard
In 1184, Henry VI, then king of Germany, convened a political assembly at Erfurt to address a feud between powerful nobles. Such a gathering—often called a diet, from a German word for an assembly—brought rulers and aristocrats together to negotiate disputes and secure their cooperation. The meeting’s purpose was political; its venue turned it into a disaster.
The nobles assembled in a building whose timber floor stood above a cesspool, a pit used to collect human waste. With so many people crowded into the room, the floor gave way. Those standing on it plunged into the pit below, where about 60 people drowned.
When the setting became part of the disaster
The collapse exposed a risk built into the venue: a crowded gathering placed heavy loads on a wooden structure over an open waste pit. The floor’s failure was sudden, leaving little chance for those who fell to escape. Henry survived by reaching a stone alcove, a recessed space in the masonry that did not fall with the timber floor.
The episode is remembered as the Erfurt latrine disaster. It is a stark reminder that medieval diplomacy depended not only on agreements and alliances, but on the ordinary physical spaces where rulers met. At Erfurt, the room meant to contain a political crisis could not contain the weight of its guests.
