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
The entire Stockholm metropolitan area, consisting of 26 municipalities, has a population of over 2.2 million, making it the most populous city in the Nordic region. The Stockholm urban area, defined only for statistical purposes, had a total population of 1,630,738 in 2015. In the following municipalities some of the districts are contained within the Stockholm urban area, though not all: