Rauna Castle (German: Rownenborgh, Ronneburg) ruins are located in the village of Rauna, in Cēsis District, Latvia. The castle was the principal residence of the Archbishopric of Riga and was visited each year by the Archbishop and his entourage. During the 16th century, it was greatly expanded and a settlement developed around the castle. It was first demolished in the 17th century, but the towers and parts of the castle still remain.