Västerås [vɛstər'oːs] is a city in central Sweden, located on the shore of Lake Mälaren in the province Västmanland, some 100 km west of Stockholm. The city has a population of 107,005 inhabitants (2005) out of the municipal total of 133,623 (2007).
http://en.wikipedia.org/wiki/V%C3%A4ster%C3%A5s