St. John's Church in Helsinki, Finland is a Lutheran church designed by the Swedish architect Adolf Melander in the Gothic Revival style. It is the largest stone church in Finland by seating capacity.
Situated in the Ullanlinna district of Helsinki, the church was built between 1888 and 1893, the third Lutheran church in Helsinki, and still the biggest. The twin towers are 74 metres in height, and the church seats 2,600 people and has excellent acoustics, and it is therefore used for big concerts and events as well as services. The altarpiece shows Saul's conversion and the painting, called A Divine Revelation, is by Eero Järnefelt, brother-in-law to Jean Sibelius.