The church on Hjarnø is one of the smallest churches in Denmark; it currently serves 87 parishioners. The church building appears to date from the 16th century. Although it originally lacked a bell tower, one was added in 1877 with a bell dating from 1425. Within the church, the granite baptismal font is made in the Romanesque style and dates from the 12th century. The altarpiece was carved by Jens Hiernøe in 1805. Hanging from the ceiling, there is also a model Viking ship, which was donated to the church by the Glud Museum in 1955.
References: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.