The Masku Church, built probably in 1490-1510, and surroundings represents one of the oldest parishes in Western Finland. The Masku parish was mentioned first time in 1234. The Mural paintings and pulpit date from the 17th century. There are also several medieval artefacts like crucifix and Silesian altarpiece located inside the church. Near the church is also "Humikkalan kalmisto", an Iron Age burial ground.
Finnish National Board of Antiquities has described the church area as national built heritage.
The first written record of church in Danmark locality date back to the year 1291. Close to the church are several stones with a Christian text and cross inscribed. The oldest parts of the present red-brick church are from the 1300s. In the late 1400s the church was enlarged to the appearance it has today. The church has been modified both internally and externally several times, among other things after the fires in 1699 and 1889. There are lot of well-preserved mural paintings in the walls.