چكيده به لاتين
Throughout history, castles have played an important role in the fortification of cities and villages. Usually, castles are built on the heights of rocks, cities, villages and important routes, and they are considered a defensive barrier against enemies. Usually, castles were considered as judicial centers, local government headquarters and a residential place (manorial castle). In general, castles, whether occupied by appointed officials or with royal or aristocratic owners in their residence, were bustling centers of social and economic activity and could generate trade and form central sites and natural sites. The specific functions of castles varied greatly, both over time and between regions types and lord. What was constant, however, was that the castle was always the primary representative of royal (or lordly) power and territorial control. Keshtkhani castles are the most common type of residential and historical life in the past periods of architecture, which introduces a type of pattern and area of social life. In the past, due to the presence of aqueducts water, and the surrounding land, life was formed in the dominant of agriculture, for this reason, castles were built next to the agricultural lands, which were the residences of khans, serfs, and farmers, and were referred to as the lord's house or lord's castle. In addition to the military structure and function, castles include spaces such as; Tower and barrow, residential parts (and residential towers) and bathroom, etc. Yusuf Khan Amir Mujahid Castle is one of the lordly castles that has special physical and functional characteristics. The purpose of the research is to introduce Yusufkhan Castle and provide a conservation plan according to the knowledge of the past and present of the castle.To achieve the goal, the historical interpretation approach is used to read historicsl documents and navigate material works. The use of oral documents and interviews with the last witnesses and people who lived as serfs in the castle, and by analyzing and interpreting old information and data and aerial images, along with other main tools, constitute the research method. This research describes the physical and functional capabilities of their subsets and with access to the necessary studies, a plan will be made based on the comprehensive restoration of the complex in its natural and historical context, and with the knowledge that due to the passage of different periods, a major part of the structures of the building It has been destroyed that the necessary preparations will be made in terms of physical and functional strengthening of the building by using local materials methods and maintaining the current function but available principles and known techniques in the place.