This awe-inspiring, 13th-century church adjacent Town Hall Square sports an impressive Baroque tower as well as an ornate, outdoor clock that's said to be one of the most photographed objects in Tallinn. The real treasure however is the intricate, wood-carved interior, which includes Baroque pews and a Renaissance pulpit (the oldest in Tallinn). Founded by the Order of the Holy Spirit, the church was always close to the people - It was the most active in providing alms to the sick and poor, and it was here that the first sermons were given in Estonian after the Reformation.