21st century BC in architecture From Wikipedia, the free encyclopedia Buildings Great Ziggurat of Ur constructed[1] See also 21st century BC Timeline of architecture References ↑ Huth, Andrew (June 26, 2010). "Touring the Great Ziggurat of Ur". Army.mil. United States Army. Retrieved February 15, 2020. This article about history of architecture is a stub. You can help Wikipedia by expanding it.vte Related Articles
