The different forms of buildings reflect the diversity of different cultures and schools among the architects of different ages. The geometric shapes have dominated most of the buildings in ancient and modern times and we see this clearly in distinctive and unique building, which are distinctive signs of some cities including pyramids in Egypt, the study discussed the study of the simulation of nature and its impact of forms and formation of buildings all types and sizes compare them to the thermal performance of buildings. In the practical, the type of high buildings was identified as a study case because of its importance and impact, The research objective is that the shape derived from nature is better in terms of thermal performance, This confirms the hypothesis of research that the shape resulting from nature leads to better environmental and the performance of the thermal compared to many geometric shapes.

Keywords : Formation – Tall Buildings - Tree - Nature Simulation - Thermal Performance - Geometric shapes.