Thirteen Buddhist Sites of Yamagata
The Thirteen Buddhist Sites of Yamagata（山形十三仏霊場, Yamagata jūsan butsu reijō）are a group of 13 Buddhist sacred sites in Yamagata Prefecture, Japan. The temples are dedicated to the Thirteen Buddhas.
Source: Wikipedia — Thirteen Buddhist Sites of Yamagata (CC BY-SA 4.0)