Wikipedia
Kauniainen (; ) is a small town and a municipality of inhabitants in the Helsinki Metropolitan Area, Finland. It is surrounded by the City of Espoo, in Greater Helsinki. Kauniainen was founded by a corporation in 1906, AB Grankulla, that parcelled land and created a suburb for villas; Kauniainen received the status of a market town in 1920, the Finnish name in 1949, and the title of kaupunki ("city, town") in 1972.
The local taxation rate in Kauniainen is the lowest in Finland (%), which makes the city attractive to the highest earners. This in turn makes the average income generally high, making it possible to keep the taxation rate low without compromising the service to the inhabitants.
Approximately of the population have Finnish as their mother tongue while are Swedish speakers. The dominant party in the city council has traditionally been the Swedish People's Party.
Today, Kauniainen is the only municipality in Finland to be fully enclosed by another municipality.