Al-Mada'in (Arabic المدائن "The cities", also known under the Aramaic name "Mahoze", or as "Madayn") is the name of an ancient urban complex along the Tigris, in present-day Iraq, that was the site of the cities of Seleucia and Ctesiphon, and was also referred to as Seleucia-Ctesiphon.
The site has received considerable interest from Archeologists since the eighteenth century; the most famous landmark there is the Taq-i Kisra.