Nope, it’s not a Medieval castle. It’s just your typical 19th-century attempt to replicate previous historic periods. Look closely, and you’ll see some fun modernist details on the columns and other parts of the building. In fact, Helsinki is the only European capital that has no Medieval history. Although the Swedes colonized the coastline along Helsinki in the 1300s, it didn’t become a small fishing and trading village until the mid 1500s.