The church of Ajat, dating from the twelfth to the thirteenth century, as well as the adjoining castle, built in the thirteenth to fourteenth and seventeenth centuries, are the major witnesses of an ancient Templar commandery. The Romanesque church, which was once fortified with domed vaults, had its nave, as did the apse, covered with lauzes. A simple wall-mounted bell tower overlooks the triumphal arch. The cover of the nave has been restored to restore the building to its original appearance at the time of the commandery. This is also of great importance for the preservation of an increasingly rare traditional construction technique. The latest work on this building includes the complete restoration of the frame and roof, the renovation of the exterior facades with the opening of two windows and a door, the restoration of the interior facades and the paneled ceiling. In addition, the windows were decorated with contemporary stained glass windows created by Father Kim en Jong. Finally, a layout of the forecourt of the church was realized. These recent renovations mark the conclusion of the preservation and enhancement of this historic building.