A Baltic inlet in Schleswig associated with the murder tradition of Eric IV of Denmark.
The Schlei is a fjord in Schleswig defining the southern boundary of the Danish peninsula near the historic town of Schleswig. The region was historically contested between Danish royal authority and German imperial influence.
The Schleswig corridor where the Schlei sits was the focus of repeated political and military conflict between Denmark and the Duchy of Holstein. Margaret I's operations in the region during the 1380s and 1390s reflected her effort to stabilize the southern border of Danish power as she consolidated the Kalmar Union.