Abstract
Nusratabad Farmstead was built in 1264 AH by Aqamirza Nasrullah Sadr al-Mamalik around Qom and was dedicated to his two male children. This farmstead was active until the Pahlavi period and after that, the remains of the farmstead called Sadri castle were registered in the list of national monuments of Iran in 2001 with the number 4868. there are written documents such as historical maps and endowments related to the year 1270 AH about this farmstead. The mentioned documents provide useful information about the characteristics of the farmstead and qualities such as why it is made, the formation process, various physical elements and agricultural products. The research problem is the low familiarity of the communities with the subject of “farmsteads architecture” and also the possibility of reviving Nusratabad and Sadri Castle in the future. The aim of this study is to introduce a Qajar farmstrad and to achieve them two questions are asked: 1. What are the physical and functional characteristics of Nusratabad Farmstead? 2. What was the role of these characteristics in the survival of Nusratabad farmstead? this study tries to approach the subject with an interpretive approach and historical interpretive strategy and uses the three main formats of document research, interviews and field studies. Studies show that Nusratabad farmstead has two physical and functional characteristics and their subsystems. Positioning, formation of physical elements and farmsteads monitoring methods are related to its physical characteristics and the functional characteristics of Nusratabad farmstead also refer to the type of crops, social pyramid and related cultural issues. The architecture of Nusratabad Farmstead have been the product of a combination of physical and functional characteristics over time and Sadr al-Mamalik was able to protect the farmstead with these measures and hand it over to the current supervisors.
Keywords: Nusratabad Farmstead, Sadri Castle, Agricultural Heritage, Qom.

Introduction
Historical farmsteads have been seen in two forms so far; the first form is called “Agriculture castles” in which the castle is the axis of the farmstead and the residence of the farmstead dwellers and usually Agriculture lands and gardens were gradually formed outside the castle.
But the second form is “Agriculture complexes” in which the elements of the farmsteads are seen as a small village and a concentrated fabric in cooperation with each other and the farmsteads dwellers lived in a place other than the castle.
Nusratabad farmsteads was built with the model of Agriculture castle and centered on Sadri Castle in 1264 AH by Aqamirza Nasrullah Sadr al-Malik and the date of its endowment dates back to 1270 AH. The mentioned properties is now located at the end of Hazrat Masoumeh Boulevard, at the old road from Qom to Saveh and Sadri Street. From this farmstead and the Agriculture castle related to those two maps have been seen so far: a); The main and first map is made of fabric and has dimensions of 216 × 88 cm, in which the qanat and four mills of Nusratabad farmstead in the old plain and the western and eastern fronts of Qom river are also shown. This map is currently available to heirs and is not available. B); The second or monitoring plan is made of fabric with dimensions of 70 × 257 cm, which was prepared during the construction of the castle in 1264 AH. (Mohseni, 2014:203) This map is mentioned in Madame Dieulafoy ‘s travelogue and will be discussed in this article. The research problem is the low familiarity of the communities with the subject of “farmsteads architecture” and also the possibility of reviving Nusratabad and Sadri Castle in the future. The aim of this study is to introduce a Qajar farmstead. Rereading these documents can acquaint the scientific community with the architectural pattern and social and cultural characteristics of a Qajar farmsteads. For this reason, it is tried based on three formats; Document research, interviews and field studies to answer research questions. this research approaches the issue with its interpretive approach and historical interpretive strategy.

Identified Sites
The available documents show that the owner of the farmstead, Sadr al-Malik, was originally from Taleqan but her ancestors had migrated to Ardabil. During the reign of Mohammad Shah Qajar, Sadr al-Malik was in a good position in terms of relations with the court as well as religious relations with the people and he had built this farmstead for the development of property and qanat as well as economic exploitation. After building the castle, he selected people from the Zandieh tribe and settled as slaves in the Sadri Farmstead Castle (Arbab, n.d.: 51). According to the calculation of Afzal-ol-Molk, their number reached 40 to 50 families and between 200 to 250 people (Afzal Al-Molk, 2017: 88). The tribe was responsible for maintaining and producing on the farmstead and cultivating summer and winter crops. There are currently two historical maps of this farmstead: a; Main and first map b; Second map and monitoring. In the historical map, the two elements of the castle and the refrigerator can be clearly seen. According to the plan, Sadri Castle had a fort and twelve main and secondary towers, qanats, buildings and interior spaces. In addition, the remains of a historic bath can now be seen in the castle, which were not drawn on the castle monitoring map and may have been added to the complex later. This map describes other spaces under construction such as mills, baths, caravanserai, mosques and qanats. These features with the details stated in Tables 1 and 2 are the result of reviewing the documents studied in different sections of the research and it can be considered as physical and functional characteristics of Nusratabad farmstead. The contents of these tables show that the architecture of the farmstead was a function of social, economic, cultural, security, environmental and climatic issues that manifested themselves in different ways in historical periods.

Conclusion
This study has concluded that Nusratabad farmstead has two physical and functional characteristics and their subsystems. Positioning, formation of physical elements and field monitoring methods are related to its physical characteristics. Based on this, Nusratabad farmstead was built in the Qajar period with a short distance from Qom and Water resources and security have played a role in its location. Sadr al-Malik was able to build a large farmstead with elements such as an Agriculture castle, caravanserai, mosque, mill, qanat, bath and refrigerator and settle some of the Zandieh tribe. The functional characteristics of Nusratabad Farmstead also refer to crops, social pyramid and related cultural issues. Accordingly, the formation of Nusratabad farmstead started with good intentions and then economic exploitation has been given priority. Sadr al-Malik was able to achieve a monitoring program in by designing architecture, monitoring plan, determining the type of endowment operation and setting up the endowment letter. In a way that has been continued by his supervisors until now. Therefore, the architecture and composition of Nusratabad Farmstead have been the product of a combination of physical and functional characteristics over time.

Acknowledgment
We would like to thank the managers of the Sadri Castle(Ghal-eh Sadri) complex, especially Mr. Hamed Sadri and Younes Sadri.

Observation Contribution
The authors have contributed equally to the compilation of the paper.

Conflict of Interest
There is no conflict of interest.
 

Abstract
Undoubtedly, the southern area of Tehran province, which has been formed in the fourth region over time, especially in the late Islamic centuries, based on historical sources; It was always of great importance for the governments of this era from the point of view of geographical and political location. One of the reasons for the importance of this area was its location on three important communication routes that connected Tehran to Qom. The above research was carried out with the objectives of identifying and documenting as well as understanding the formation and function of related facilities in the ancient roads located in the south of Tehran to Qom province, in which two questions are also raised: 1) the most important communication roads located in the southern part of the province What are the communication routes between Tehran and Qom? And 2) which pattern or patterns did the studied road network generally follow? Based on this and relying on historical written sources and archeological field studies, we can propose the following hypotheses: three important communication routes in the studied area, from the dimensions of road scenery [residence-welfare, security-guidance-movement scenery] which are a They were a coherent group, they obeyed. Routes that, apart from having (commercial and economic effects) Functions on the communities living in their neighborhood; they also had many effects on the (cultural and social relations) of these societies. The present research was done with descriptive-analytical method and gathering information in the form of documentary and historical studies and archeological investigations. The results of the present research indicate that three important communication networks [1) Abdul Azim Ray Gate - Kenargerd - Dier kechein - Qom, 2) Aliabad - Hoze Sultan - Qom (abandoned) and 3) Aliabad - Manzariyeh - Qom] in the southern region of Tehran province. It was located towards Qom in chronological order.
Keywords: Road Network, Tehran, Qom, Late Islamic Centuries, Archaeological Evidence, Historical Texts.

Introduction
Regarding the description and recognition of the ancient and communication routes from the south of Tehran province to Qom in the Islamic era, at the beginning with the center (Rey) and later (Tehran), there have been several historical and geographical documents that show that the communication routes The above in this area were of great importance for the governments of this period. Ibn Faqih, describing the main roads of Ray to the neighboring areas in terms of commercial nature, says: Goods were also produced by Ray artisans, they made crafts such as combs and salt pans, etc. from wood. Ray weavers were also famous worldwide and all kinds of They exported clothes to the eastern and western regions through the important roads of this city) (Ibn Faqih, 2000, 51). Moghdisi also writes about the roads of Ray from a (mobility-security) point of view: ((the easiest and most prosperous road in Iran is the road of Ray)) (Moghdisi, 1982: 718) and further says: it is clear that this feeling Comfort and security should be established for travelers so that they can easily take advantage of all the sights and facilities provided near the road (ibid., 574). Ibn Hawqal also paid attention to the Ray road from the (commercial nature) and in this context he says: Apart from Isfahan, which was a commercial and important city, from Iraq to Khorasan (Ray) can be mentioned, which is The reason for having different main and secondary ways in terms of production and export of goods is unique and significant (Ibn Hoqal, 1987: 106). Bakran considers the distance between Ray and Isfahan to be about 62 farsang (Bakran, 1963: 15) and Imam Shushtari, like Bakran, considers the distance between Ray and Isfahan to be 62 farsang (Imam Shoshtari, 1960: 35). Mostofi states that the distance between Ray and Isfahan is 86 farsang (Mostofi, 1983: 51). In the last few decades, our understanding of the above-mentioned communication routes relied more on the same historical documents. However, due to the abundance of archaeological evidence related to these routes, which included buildings and facilities related to them; In previous years, they have been studied and investigated by some researchers and archaeologists in the field, and these archeological evidences themselves support the first hypothesis in line with their alignment with the writings of historical-geographical texts and travelogues in the best possible recognition of communication routes. It illuminates between the two cities of Tehran and Qom.

Discussion
The southern region of Tehran province was considered as one of the key strategic and geographical regions during the late Islamic centuries. The existence of numerous buildings and intermediate structures in the three ancient routes of Tehran - Qom, shows the archaeological evidence and the importance of this region. As mentioned, this highway starts its route from the south of Tehran province and passing through the cities and villages located in this area to the city of Qom and from there, turning into several branches to other parts of the country such as Isfahan, Kashan, Arak and others. The southern regions are connected. One of the most important features of this highway is its (cultural and religious) dimension. The cultural and religious dimension of this course can be seen as the first option that was always considered by the rulers of the late Islamic centuries, especially Safavieh and Qajar. The reason for this importance was the existence of the holy court of Hazrat Masoumeh in the city of Qom. Therefore, this issue caused the rulers of the later Islamic centuries to build and erect numerous buildings and facilities on the way to the extent possible for the well-being of these pilgrims and caravans, and many of these buildings are still standing. Another importance of Tehran-Qom highway; It was connected with the Tehran-Khorasan highway, which along with this highway was also considered one of the cultural routes and thresholds of Iran’s nobility. The third strategic importance of the Tehran-Qom highway is the ((commercial)) dimension in the way that in the late Islamic centuries, this highway was a very important bridge for the exchange of commercial and commercial goods that went to Tehran and the north of the country through Bushehr port. were carried One of the other important issues that always add to the importance of the Tehran-Qom highway was the (political and military) dimensions, because the statesmen of the late Islamic centuries [Safavieh and Qajar] to advance their goals in these fields and reach the capital as quickly as possible. As well as the open waters through the Persian Gulf and the Oman Sea and on the other side of the Caspian Sea, they urgently needed a good route to achieve these goals, which has high levels of amenities and road-dependent facilities. Therefore, the existence of these mentioned dimensions has proved the special importance of the southern region of Tehran province.

Conclusion
Based on the questions and assumptions raised, as well as citing historical sources, archeological investigations and the analysis of these components together, we can reach the conclusion that the southern region of Tehran province due to its special cultural and political position that during the last centuries Islam has always been important from the rulers of this era, and on the other hand, categories such as trade brought the transfer of cultural and social experiences to the people living along these communication networks, and these communities themselves are somehow a part of this economic cycle. and were considered cultural. Therefore, the existence of these three important communication routes: 1) Abdul Azim Ray Gate - Kenargerd - Dier kechein - Qom 2) Aliabad - Hoze Sultan - Qom [abandoned] and 3) Aliabad - Manzariyeh - Qom, which also followed the patterns of Manzariyeh Road. The importance of this area is increasing. so, from the archaeological evidence that included buildings and intermediate structures [caravans and bridges], he also acknowledged that the studied routes were always the place of traffic and passage of many commercial caravans and travelers. However, several reasons can be imagined in the field of recognition, formation and functioning of these communication ways and the buildings and structures located in them: 1) the history and long history of the territory of southern Tehran province in the creation of roads and facilities related to them. 2) Two factors of preparation of main roads and provision of comfort facilities and safety of travelers and caravans ((road monitors)) which were realized by completing road construction and construction of intermediate buildings: a) establishment of caravanserais and shelters. b) Creating water structures and solving problems of lack of water in these routes (reservoirs and glaciers). c) Establishing security and guarding caravans and passengers. 3) The religious and political competitions of the governments of this period [Safavieh] with other governments [Osmani] in order to encourage the people of Iran to visit the shrines. 4) The military and administrative dimension and the political competition of the Western governments such as Russia and England were taking steps to dominate the roads of this region in the advancement of their colonial interests. In the end, what can be said about these ancient ways: that they are the same communication networks of today that have continued to exist with little changes.