The locality is best known for Ruth's Church, from which it takes its name, "ker" meaning church in the Bornholm dialect. Standing on a hilltop above sea level, it is the highest-lying church in Denmark. Commanding views over the surrounding countryside, it formerly served as a landmark for sailors in the
Baltic Sea. Built in the
Romanesque style around 1200, much of the original structure has been replaced by extension and reconstruction work. Its separately standing half-timbered bell tower is characteristic of Bornholm churches. With its adjacent rectory, the church stands high above the houses in the locality. ==Notable inhabitants==