World Heritage Site Suomenlinna is a cultural treasure. Its construction began in the mid-18th century, when Finland was still part of Sweden. The development of tourism began after the wars in the 20th century, and in the 21st century, the Suomenlinna sea fortress is one of the most popular attractions in Finland. Today, the fortress and its museums, restaurants and events are a memorable experience for visitors of all ages. Suomenlinna is not only a popular visitor attraction but also a home of 800 residents. The number of visitors to Suomenlinna has continued to grow, and with over 900,000 visitors every year, the sea fortress is one of Finland’s most popular tourist destinations. Suomenlinna attracts visitors from both Finland and abroad: it offers an ideal environment for exploring a historical world heritage site, or just spending a day relaxing. Many visitors come to the island during the summer, but the number of wintertime visitors is steadily growing. https://www.suomenlinna.fi/en/