01 / Tanigawa tiles
The original tiles left on the main hall roofare said to be almost all Tanigawa tiles.
The Osaka Prefecture designation report says that roof repairs in 2023 and 2024 showed many of the original tiles of the Kozenji main hall remain, almost all of them said to be Tanigawa tiles. Tanagawa, where they were made, had clay, firewood and a shipping port close by, and became a major production area from the Edo period to the Taisho era. The report names the oldest inscribed Tanigawa tile as dated Eisho 12 (1515).
- Original tiles said to be almost all Tanigawa
- Major tile area, Edo to Taisho
- Oldest inscription: Eisho 12 (1515)

