Uspenski Cathedral is one of TWO Official State Churches of Finland - Credit: Wikimedia Commons
Uspenski Cathedral (, , , Uspenskij sobor) is a Greek Orthodox or Eastern Orthodox cathedral in Helsinki, Finland, and main cathedral of the Orthodox Church of Finland, dedicated to the Dormition of the Theotokos (the Virgin Mary). Its name comes from the Old Church Slavonic word uspenie, which denotes the Dormition. It is the largest Greek Orthodox church in Western Europe. Read more on Wikipedia
Source: en.wikipedia.org