The World’s Oldest Skyscrapers are in Yemen
Yemen’s walled city of Shibam, known for its ancient mud skyscrapers, is the oldest city in the world to use vertical construction. Credits: Jialiang Gao ww.peace-on-earth.org, CC BY-SA 3.0, via Wikimedia Commons.In the Empty Quarter desert lies Yemen’s ancient city of Shibam, whose incredible mud s

