Madrasah Mustansiriyah
It was one of the world's oldest schools, founded by Caliph Al-Mustansir in Baghdad, and was a massive scientific center, built on an area of 4836 square meters and located near the regular school.
In the center of it is a massive fountain with the school clock embedded in it. In addition to the vessels and halls, the school is built on two floors and has a hundred rooms.