Anna K.
Google
Koyasan Reihokan Museum is the main museum on Mount Kōya, dedicated to the religious treasures of the Shingon Buddhist temples located here. It was founded in 1921 to protect and display objects that for centuries had been kept inside temple buildings and were rarely accessible to the public.
The collection includes Buddhist statues, mandalas, ritual tools, sutras, and portraits of Kūkai (Kōbō Daishi). Many of the works date back to the Heian and Kamakura periods, offering a direct visual connection to the early history of Kōyasan and esoteric Shingon practice. Rather than focusing on art for art’s sake, the museum shows how these objects were actually used in rituals, prayers, and daily monastic life.
The building itself is simple, which helps keep the attention on the exhibits. Seen after visiting temples such as Kongōbu-ji or Okuno-in, the museum adds helpful context, making it easier to understand the symbols, images, and ritual atmosphere encountered elsewhere on the mountain.
Admission is paid, photography inside is not allowed, and a visit typically takes about 45–60 minutes.