Turku Orthodox Church or the Church of the Holy Martyr Empress Alexandra is the main church of the Turku orthodox parish located on the northeast corner of Turku Market Square in Turku, Finland. The church was built in under plans drafted by architect Carl Ludvig Engel and was ordered by Nicholas I of Russia on 5 January 1838. Construction, which began in 1839, cost 67,886 rubles and was completed in 1845. The church was consecrated on 2 September 1845. The church was dedicated to Alexandra, the spouse of Diocletian who had publicly became Christianised and suffered a martyr’s death on 23 April 303. Making her the patron saint may have been because of Nicholas I’s own wife’s name Aleksandra Feodorovna.