An analysis on the Influence of Visibility and Accessibility to the City Landmarks for Increasing Environmental Legibility

Space perception is an important issue in designing urban spaces. This means that urban designer should codify the space in such an appropriate process that it can be legible for users of spaces. Therefore legibility is an important quality in designing of urban spaces. From viewpoint of the authors of this research, signage has two important aspects: the influential factors that affect the legibility of signs from different users of space and also the location of signs that have effect on accessibility and visibility of the signs. This research emphasized on the second aspect of these dualism principles of signage in urban spaces. For investigating this, district 1 of region 12 of Tehran Municipality is selected. The result of first aspect presents the importance of distinctness, and uniqueness of the landmark. Meanwhile beside functional, visual and semantic characteristic of a landmark, landmark location is an important criterion. The result of examining the location of space with Depthmap software showed that access to the landmark and location of it in pedestrian path, has a specific rule on remaining the object in the mind and so the path become more legible and readable. So the both aspects have influence on signage pattern.