The architectural feature of the Islamic artists that came from the Romans was the horseshoe arch. This is what they liked best in Roman culture, so they decided to use it in their art and architecture as well. Islamic architecture is quite different from any other, although it was certainly influenced by many other world architectures.
Vitruvius Man is a drawing by Leonardo da Vinci whitch depicts a male figure in two superimposed positions with his arms and legs apart and simultaneously inscribed in a circle and square.