Barnhusviken (Swedish for "the Orphanage Bay") is a body of water in central Stockholm, Sweden. Separating the island Kungsholmen from the mainland district Norrmalm north of it, it connects Karlbergssjön to Klara Sjö.
Together with Karlbergskanalen, Karlbergssjön, and Klara Sjö, Barnhusviken constitute the nameless body of water which separates Kungsholmen from the city districts Norrmalm and Vasastaden and the northern suburb Solna.
The northern shore, entirely occupied by the Klarastrandsleden motorway and eight rows of railway tracks, is not accessible to pedestrians, but, in contrast, the southern shore offers a section of the walk stretching some 2 km from the City Hall and all the way along the northern shore of Kungsholmen.[1]