also: さいこくさんじゅうさんしょ
noun
Saigoku 33 Kannon pilgrimage
Refers to the set of thirty-three Kannon temples in the Kinki region, a famous pilgrimage route.
西国三十三所を巡る旅に出た。
I set out on a journey to visit the Saigoku 33 Kannon temples.
西国 (Saigoku, western provinces) + 三十三 (33) + 所 (places). The name refers to the 33 temples dedicated to Kannon in the Kinki region.