During the Parthian and Sasanian periods, Asman Abad region was a part of Massa batice, or into Masabadhan province in Media or Jibal State. This province has two cities, Shirvan and Ariyuhan, which are mentioned many times in historical and geographical texts. During the Parthian and Sassanid periods, historical texts indicate that this area was governed by an independent ruler or king. During the Sassanid period, the Hormozan dynasty ruled this area, which was one of the remaining families from the Parthian period and native to the region. In the intermountain plain of Asman Abad, numerous sites and works related to the historical period were identified, which shows that due to the suitable regional and climatic conditions, and also as an area that had the ability to access other parts of Masabadhan, this area was of interest during these times. One of these works is the Pynjah Mall building in the west of the plain and next to Suraveh, which, due to its huge dimensions, was one of the palaces of the rulers or ruling dynasties of Masabadhan province during the Parthian and Sasanian periods. The architectural style of the Pynjah Mall Palace building, which is built with Rubble and plaster mortar. It has a porch (Aivan), a dome, and several spaces around them. It belongs to the Parthian period and was influenced by the architectural style of this period in Mesopotamia (Assur palace), especially the wide porch and the spaces around it, in which parallelism is observed. After the fall of the Parthians in the Sassanid period, this palace was restored and reconstructed by the surviving rulers from the previous period, and from this reconstruction, which includes covering the spaces and interior and exterior decorations, nothing remains today, only the foundations and the remaining walls. Which belong to the Parthian period. Examining the remains and the construction and layout of the space shows the architectural style that continued to be followed in construction during the Sassanid period and continued to evolve. The effects of this evolution can be seen in the buildings and palaces of the Sassanid period in Fars province. The location of this palace in the west of the Asman Abad plain depends on several factors, including the presence of natural resources such as gypsum mines, abundant water, fertile lands and other landscape and natural environment and its forested mountains that have made this area enclosed and inaccessible. . The historical texts that were written after the collapse of the Sassanid's dynasty did not mention this building and area. Because this building was abandoned and abandoned forever before the Arabs invaded this area due to the events, crises and movements that occurred in the Sassanid period, especially in the second half of it, and it was no longer of any importance at the time of the Arab invasion. The foundations of simple buildings were identified near the Pynjah mall Palace building, which belonged to the accommodation and resting place of the builders, architects and workers of this building. In addition to the architecture, in the investigation around the Pynjah Mall Kolkol Palace, found a large number of Clinky Ware and simple pottery sherds, which indicates that this building and another building located a short distance from the remains of today, were founded and built during the Parthian period. These buildings have been associated with the sites of the historical period of the Asman Abad region and neighboring areas, which include cities, rural sites, castles, mills, and several sites. In this article, while providing an introduction to the problems and archeological problems of the Parthian and Sassanid period, I have discussed the media or Jibal state and Masabadhan province in the historical period, and in the following, I have investigated the unknown building of Pynjah Mall Kolkol Palace and its landscape, and its historical and architectural analysis. The end, have tried to provide a conclusion of them.