Espoo (ĕsˈpô) [key], Swed. Esbo, city (1998 pop. 204,962), Southern Finland prov., S Finland, 10 mi (16 km) W of Helsinki. Part of the Helsinki metropolitan area, Espoo saw enormous growth in the late 20th cent., and is now Finland's second largest city. The city has five regional centers, including Tapiola Garden City, an exemplary planned city. Espoo has many high-tech businesses and institutes; the Helsinki Univ. of Technology and Espoo-Vantaa Institute of Technology are there. Notable sights include the city museum and a granite church dating from 1458.