Linked from
The 6 pages that link to Mount Kōya, each with the reason it gives.
Shingon BuddhismBroader topic: Kūkai established its central monastic complex there.
Kii PeninsulaBroader topic: It is one of the peninsula’s defining religious centers.
KūkaiBroader topic: Kūkai established a monastic center there with imperial permission.
SaigyōRelated: Saigyō spent periods of retreat in this sacred mountain landscape.