This research was carried out in Istanbul Inns Region, a trade center that has not lost its vitality for centuries, in the context of its original spatial patterns. Inn structures emerged with the increase of trade in the 15th. Century. Unlike caravansaries, which have a periodic structure of accommodation, they have "City Inns" in the big cities during the Ottoman period, with accommodation on one hand and manufacturing and production on the other. (Benli, 2007, pg.10) It is known that the Inn buildings were made intensely in the historical peninsula area called Istanbul inner walls, which is the port city. This region is called Inns Region. In this research, the Space Syntax method has been used, which explains topological effects such as land slope, spatial formation, attractive opportunities such as trade. With this method, which is an explanatory one of understanding the relationship between pedestrian mobility and the urban grid, the existing pedestrian mobility system in the region has been determined to define the spatial and natural cycle effects on mobility what have been assessed methodologically with a number of variables. In this method, original fragments, of behavioural patterns in traditional environments are taken as an example where settlements such as culture, space, and geography are the determining factors. Traditional settlements are successful interfaces in terms of their physical structures. The success of this analyse is to reveal in what layers they are correct or wrong. In this context, the purpose of this research intends to understand, where and how the space brings people together according to the pedestrian mobility in the traditional commerce zone, and to understand the parameters of structures and topological features surrounding these spaces.