“…A structural landmark is about the location of objects in an environment. Various studies argue that if an object is highly accessible (for instance if an object is located at a decision point (Burnett, Smith & May, 2001;Cenani et al, 2017;Evans, Smith & Pezdek, 1982;Lynch, 1960;Miller & Carlson, 2011)), then the object is more likely to be used as a landmark. For instance, Burnett et al (2001) defined characteristics of preferred landmarks for navigation and they mentioned that landmarks would be more useful if they are located close to decision points.…”