-

From the very beginning of human civilization the fascinating world of Nature has been a continuous source of inspiration to the greatest painters, composers, sculptors, philosophers, poets, designers, architecture and engineers. The living world of today has gone trough many cycles of change and adaptation to reach the level of beauty we see today. In that process, only the most efficient and strongest and most resilient forms of life have survived the challenge of time. The natural world has reached its present state of development trough millions of years of evolution.Usually we are inspired by feeling Nature's beauty through smell, color, shape, form and sound. Often, without looking for the deeper meaning and without questioning Nature's form of expression, intuitively we follow our natural instinct and copy the sounds, colors and shapes that surround us. It is almost certain that the earliest structures employed by prehistoric humans were natural forms. Well before mankind had developed the ability to shape the world around him to his own needs, he would have made use of caves for shelter from the elements, trees for protection from predators or hiding places while hunting, conveniently fallen trees to bridge gaps over streams. Nature has an over-riding priority in developing "efficient" structural forms. Perhaps what makes Nature's creations very special is that beauty of forms and efficiency of structure are achieved simultaneously. There is almost without exception a clear logic to the structural principles that somehow in a magical way create aesthetically pleasing forms that we all want to look at and admire, touch and feel in our hands or listen to. By understanding the laws of Nature, and applying them to their own creations, humans have been able to produce efficient structures that, to a certain degree, have the shape and proportions that we recognize as "beautiful". When beauty and efficiency have been combined in a structural form, by following the laws of Nature, approach the examples of Nature.The process of creating natural forms, which we consider to be inherently beautiful, has been a long evolutionary development that happened over millions of years. Natural forms have developed by finding ways to adapt to a great rang of external factors (climate, availability of food and shelter, etc). The synthesis of functionality and structural constraints summarizes that multitude of factors. The result of using natural forms in architecture is a wonderful maze of structure, where structural efficiency, functional utility and aesthetic appeal blend seamlessly together. Nature‘s lessons learned and applied appropriately, but not dogmatically.In this article the existing structural forms in Nature will be introduced and in concerning the various sample such as trees, eggshells, seashells and …, similarities and differences to man kind structures will be analyzed.