We spend around two thirds of our lives at home in our own four walls. In developing countries, such as in some African countries, living and living comfort, especially in rural regions, is at the lowest level. The Nubian Vault Association uses clay based on an ancient and sustainable architectural concept. With this construction technology, humane, but also affordable living is possible. 950 people, apprentices, bricklayers, craftsmen, and entrepreneurs have been trained since it was founded. Around 4,200 such buildings have been erected, which also meet the requirements of circular economy and have a long life span.