Excursion to Suomenlinna. In 1748, before the Russian expansionism, the Swedish decided to build a fortress. The place was chosen for its strategic location (central point of 6 Baltic Sea islands that controls entrance to the port of Helsinki and gulf of Finland) then called Sveaborg, Suomenlinna currently. In year 1808 the fortress became Russian and Finland was occupied for more than a century. Declared Patrimony of the Humanity by UNESCO, the fortress is conserved in excellent state and it is a unique example of marine fortification and military architecture, in addition to a place of exceptional beauty. One of the six islands is used by the Finnish Navy Academy, the others are workshops of numerous artists. Due to its beautiful landscapes and beaches, Suomenlinna is one of Helsinki’ people’s favourite places especially during summer.