The Kolah Farangi Citadel is located in Birjand in South Khorasan Province. It was built during the late Zand and early Qajar era between the years 1848 and 1895. The structure is a unique landmark of Birjand and was constructed by Amir Hassan Khan Sheybani. It consists of the garden, the stable, the bathhouse, the offices, and the reception hall.
The building has a hexagonal base, a white conical top and is six stories high. The main entrance is preceded by a roofed area containing some eye-catching arcs. The interior of the ground floor has a number of different rooms which are connected by hallways. In its center there is a room containing a pool which can be accessed from many different entrances. It is situated approximately a meter lower than the rest of the floor and is octagonal in shape. The pool helps keep optimum ventilation throughout the building.
The Kolah Farangi Citadel is registered as national cultural heritage site number 1880. Today it is used as Southern Khorasan’s governorship offices and storage space.