Riddarfjärden
Riddarfjärden (, "The Knight Firth") is the easternmost bay of Lake Mälaren in central Stockholm. Stockholm was founded in 1252 on an island in the stream where Lake Mälaren (from the west) drains into the Baltic Sea (to the east); today the island is called Stadsholmen and constitutes Stockholm's Old Town.
Stockholm during the Middle Ages
Stockholm during the Middle Ages is the period in the history of Stockholm stretching from the foundation of the city c. 1250 to the end of the Kalmar Union in 1523. During this period, Stockholm still didn't fill up the small island Stadsholmen (the "city islet") which today known as the Stockholm Old Town ("Gamla stan"), and as a consequence this article to some extent overlap Gamla stan.