The 2021 Training Course on Impact Assessments for World Heritage will introduce the updated Guidance on Impact Assessment for World Heritage, which has been prepared by the three Advisory Bodies to the World Heritage Convention, ICOMOS, ICCROM and IUCN, in partnership with the UNESCO World Heritage Centre. Therefore, the course will explore how Impact Assessment can be applied to both natural and cultural World Heritage. With the support of the Government of Japan, practical experience will be gained and lessons will be shared during the field assessment of the World Heritage Site of Sacred Island of Okinoshima and Associated Sites in the Munakata Region.