The latest edition of our weekly Dezeen Agenda newsletter features Junya Ishigami's below-ground level, mud-covered house and restaurant in Japan. Subscribe to Dezeen Agenda now!
Created by pouring concrete into holes in the ground to make the building's structure, the home and restaurant was built for Japanese chef Motonori Hirata who is a friend of the architect.
To prevent the mud from washing off the concrete structure, it was "hardened using a Japanese method of repairing earthen walls", Ishigami told Dezeen.