This structure served as a seat of the government or a ministry during the Karim Khan's rule, and people brought their petitions there. The building was once reached by going east from the Citadel through an arched gateway, which opened onto a garden and a spacious courtyard with two ornamental pools in front of the main structure.
The building itself was particularly famed for the marble friezes of its reception area. These depicted scenes from Persian romantic poems. The edifice was also notable for its imposing porch, which was supported by two stone columns with spiraled shafts characteristic of the Zand period until, at the time of Agha Mohammad Qajar, the columns were replaced by wooden posts. The rest of the structure was also greatly destroyed and ransacked for building materials. What survived was adapted for use as the office of the IndoEuropean and Persian Telegraph Departments in the second half of the 19th century. In later times, all but the main building were completely demolished. At present, however, the structures are being restored to their former splendor.