01 / Kishu mandarin
Itoga has a prefectural historic site,the "first place of Kishu mandarins."

The prefectural historic site is in Itoga-cho. The Ito family residence, also in Itoga-cho, is a Registered Tangible Cultural Property that the Agency for Cultural Affairs describes as facing south onto a field with a tradition as the birthplace of the mandarin. Noting that the origin is disputed, the city also presents an account that in 1574 a village headman of Itoga brought back two small mandarin saplings from Yatsushiro in Higo.
- Prefectural historic site, March 2011
- Ito family residence: Registered Tangible Cultural Property, 2018
- Account of 1574 (Tensho 2)

