Kungsholmen is in Stockholm. Kungsholmen is a district as well as an island. The district of Kungsholmen consists of three islands - Lilla Essingen, Stora Essingen and the Kungsholmen island.
There are several subway stations in Kungsholmen. On the green line you have Fridhemsplan, Thorildsplan and Kristineberg and on the blue line you have Fridhemsplan, Rådhuset and Stadshagen. There are also several buses available.
The City Hall  or Stadshuset as it is called in Swedish is a fascinating building and one of the landmarks of Stockholm. Here the Nobel Prize Banquet takes place on the 10th of December every year.
There are some splendid bars around the Fridhemsplan district of the island, for instance Dova's which is known for its cheap ale prices and quirky clientele, and Johnny's, whose resident barmaid bears some resemblance to 90s American TV star Pamela Anderson. These are some of the best value for money drinking establishments in the city - just don't spill anyone's pint.