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 Municipality
Stockholm Municipality or the City of Stockholm (Swedish: "Stockholms kommun" or "Stockholms stad") is a municipality in Stockholm County in east central Sweden. It has the largest population of the 290 municipalities of the country, but one of the smallest areas, making it the most densely populated. It is also the most populous municipality in the Nordic countries.