Gestalt theory argues that first the integrity of a subject is understood and then its components are recognized. From this point of view, the visual principles and rules of such a perception can be defined. In this concept, the question arises whether it is possible to analyze historical gardens with Gestalt theory. It shows that since the emergence of Gestalt theory and years have passed, this theory has always been used and can be used in the field of landscape architecture. In order to prove this logic, first of all, the Iranian traditional four garden systems were examined through the Gestalt theory and the Taj Mahal example. In this direction, with the help of the concepts of Gestalt theory, some aspects of Iran's four gardens landscape architecture were reevaluated. As a method, the concepts of proximity, continuity, closure, similarity and good form, which are among the Gestalt principles, were discussed and examined in the Taj Mahal garden. In addition, the features of the Gestalt theory and how it affects the Iranian garden design as a perceptual factor have been revealed. In this respect, the relationship between shape and ground is designed and made from the same concept, from decorations to floor coverings. In conclusion, in this study, the relationship between Gestalt theory and landscape architecture has been examined, the structure of the Taj Mahal has been examined, and it has been discussed that Gestalt fiction is an effective concept in the design of such areas.