Strömsborg in the context of "Gamla stan"

Norrström is one of the shortest rivers in Europe in central Stockholm. It connects Lake Mälaren with the Baltic Sea. It runs from Riddarfjärden, north of Gamla stan, to Stockholms ström (the western part of Saltsjön). Two islands lie within it, Strömsborg and Helgeandsholmen. It is one of two natural waterways between Mälaren and the Baltic sea, the other being Söderström south of Gamla stan. Norrström is crossed by Centralbron and the adjacent pedestrian bridge, Vasabron, Riksbron north of Helgeandsholmen which continues into Riksgatan and Stallbron south of the island, Norrbro crossing Helgeandsholmen, and Strömbron.

While the majority of the river flows north of Helgeandsholmen, a small controlled portion known as the Stallkanalen (sv) runs south of the island, between it and Gamla stan.

Helgeandsholmen (Swedish: [ˈhêːlɡɛandsˌhɔlːmɛn]) is a small island in central Stockholm, Sweden. It is located north of Stadsholmen, and east of Strömsborg, with which, together with Riddarholmen, it forms Gamla stan, the old town of Stockholm. Helgeandsholmen contains the Riksdag Building and the Museum of Medieval Stockholm, and is connected to neighbouring islands through three bridges: Riksbron, Stallbron, and Norrbro. Despite the small size, it is very important as it contains the parliament building, the supreme decision-making body of the Kingdom of Sweden.

The terrace in the eastern end, called Strömparterren ("The Stream Parterr"), is a public park with a restaurant dating from 1832, while the flight of stairs leading down to the water is from 1807–1810. The quay west of the Riksdag Building once surrounded Sweden's central bank Sveriges Riksbank and was thus named Bankkajen ("The Bank Quay"), while the streets on southern and northern sides are called Norra/Södra Helgeandstrappan ("The Northern/Southern Helgeand Stairs"), all of them named in 1925.