Suomenlinna is made up of eight islands: Kustaanmiekka, Susisaari, Iso Mustasaari, Pikku Mustasaari, Länsi Mustasaari, Särkkä, Pormestarinluodot and Lonna. The area encompasses 80 hectares of land and an equally large body of water. The fortress's walls total almost eight kilometres in length. The area has 105

cannons. There are 290 buildings and close to 900 inhabitants. The islands provide year-round employment for 400 people and about a hundred more in the summertime. Suomenlinna was added to the Unesco World Heritage List in 1991 as a unique monument of military architecture.