Masthamnen and Yttre Masthamnen are the eastern extension of the Stadsgårdshamnen in Södermalm, Stockholm, Sweden. The wharf area, which is owned by the corporation Stockholms Hamnar, is about 600 metres long, and is mostly located between Londonviadukten and Fåfängan on one side and Saltsjön on the other, it stretches from Varvsbranten in the west to the mouth of the Danvikskanalen channel in the east. Today, Masthamnen serves the Viking Line cruiseferries while Yttre Masthamnen serves international cruise ships. Etymology.
https://en.wikipedia.org/wiki/Masthamnen