Former Okaya Waterworks Collection Ditch
Nearby heritages
- St. Barnabas Church, Okaya, Central Diocese of the Anglican
- Former Yamaichirin-Gumi Silk Mill Guardhouse
- Former Yamaichirin-Gumi Silk Reeling Office
- Former Hayashi Family Residence
- Deep Bowl Shaped Pottery with a Facial Handle / Excavated
- Former Okaya City Hall Building
- Chuo Printing Company Building (former Katakura-Gumi Office)
- Katakura Family Residence Main Building
- Katakura Family Residence Library
- Katakura Family Residence, West Storehouse