Shali Fortress. Located in Siwa Oasis, Egypt. Built by the Siwan people in kershef, a mix of salt rock and mud, and left to melt after the heavy rains of 1926
Fujian Tulou. Located in Yongding and Nanjing counties, Fujian, China. Built by Hakka and Minnan clans in rammed earth, individual builders unknown, round fortress homes for whole villages