ArchitectMaster of Pernåunknown 15th-century architect, http–httpPhotograph of one of their buildings · Clemensfranz · CC BY 3.0 · Wikimedia Commons1 buildingshttp://www.wikidata.org/.well-known/genid/672eb1b8fc5a729d4832379862098437BuildingsSaint Mary's ChurchHamina, Finland