Defining changes is one of the most common situation for daily life. In architecture, transitions help to define these changes. When some place become privacy or become public quality, seperation needed and throughout history, meaning of transition is change. For instance when we look at Çatalhöyük, we can not see any special transition area in there. There were no certain hall or lobby. Stairs are key element for them. Their viewpoint about transition is limited for stairs because they did not have any hierarchic order or they do not need to define their transitions in spatial manner. But when privacy and class differences gain importance we can say that transition also gain importance. In sumerian middle house, there is a hall which is related with whole of the rooms and it both divide and increase the quality of rooms. Not only inside of houses but also outside of houses has its transition area. Generally its called as court and again it is use for increasing privacy level. In...