ever became of this plan. Municipal history In 1919 Lauttasaari and Munkkiniemi were separated from the rural municipality of Helsinki to form the municipality of Huopalahti (Hoplax). In 1917 Lauttasaari had been formed as a tightly populated community. Together with the rest of Huopalahti, Lauttasaari was annexed to the city of Helsinki on 1 January 1946. The congregation of Lauttasaari had been annexed to Helsinki already a few years earlier, to the northern Finnish-speaking and the northern Swedish-speaking congregations in Helsinki in 1939. The significance of the Lauttasaari bridge to the development of the island When the Lauttasaari bridge was completed in 1935 the island underwent great changes. Birger Brunila's 1913 plan was finally put the action and the first apartment buildings were built on the fields of the manor. At the same time, a new main street Jorvaksentie was built as a westward extension of the main street Lauttasaarentie running all the way through the island. The current zoning plan of the island is mostly based on Brunila's original plan, although a few of the building blocks designed at the time have been left as parks, and the construction of the Länsiväylä highway has required significant changes to the zoning plans of the western and northern parts of the island. Largest peninsulas Vattuniemi Vattuniemi is an area in the southern part of the island of Lauttasaari. Vattuniemi was built in the 1940s and 1950s as an industrial area, with diverse corporate activity such as the factory of Suomen Tupakka ("Finnish Tobacco") which ceased activities in 1995. Other former factories in the area include the Hellberg radio factory (Oy Radio E Hellberg Ab), the wood veneer factory of Mahogany Oy and the glue factory of Eri Oy. The area has also included the head offices of Helkama and Lääketukku. There are still numerous businesses in the Vattuniemi industrial area, such as Solar Films. Since the 1970s the Vattuniemi area has changed significantly. The change has continued strongly in the 21st century. Many industrial and office buildings in the area have been dismantled and replaced with apartment buildings. This has caused the population of Vattuniemi to quickly increase, and the number of jobs to decrease. The selection of services in the area has grown, and it includes grocery stores (S-Market, K-Supermarket, Lidl), numerous restaurants, cafés, health clubs and specialist stores concentrating on boating supplies especially along the street Veneentekijäntie. Katajaharju Katajaharju