The Great Church is the oldest church in Stockholm, located in the old main square in the heart of the city. It was dedicated to St. Nikolai in 1306, although the construction of the church began in the thirteenth century, and despite that, it still preserves The details and appearance of the Middle Ages, as for its external structure, it has a clear Baroque appearance, and the church played an important role during the Reformation in Sweden, where the liturgy was celebrated in the Swedish language for the first time.