Lars Eliel Sonck was a Finnish architect. He graduated from Helsinki Polytechnic Institute in 1894 and immediately won a major design competition for a church in Turku, St Michael's Church, ahead of many established architects. The church was designed in the prevailing neo-Gothic style. However, Sonck's style would soon go through a dramatic change, in the direction of Art Nouveau and National Romanticism that was moving through Europe at the end of the 19th century. During the 1920s, Sonck would also design a number of buildings in the emerging Nordic Classicism style.

Michael's Church is a church situated in central Turku. It is named after Archangel Michael and was finished in 1905. It dominates the western skyline of the city of Turku. It was designed by Professor Lars Sonck and is one of the most popular wedding churches in Turku, being able to seat 1,800 people. When Sonck won the competition for the church in 1894, he was only a 23-year-old architectural student. Michael's Church is older than Michael's parish. The parish only dates back to 1921.