Castel d'Appio is a medieval castle built by the Genoese in the 13th century. It occupies the site of an Roman militarity camp (castrum) and early Ligurian defense post. The castle lost its purpose in the 18th century and was partially demolished. Today parts of walls and towers remain.
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.