One of the preserved examples of pre-revolutionary mansions in Nakhichevan is the mansion of bread industrialist Sagir, built in the 1890s. Initially, the house was located on the central square of the city of Nakhichevan-on-Don, but after Nakhichevan became part of Rostov-on-Don, it became a historical object of the Proletarsky district.

The one-and-a-half-story mansion faces the Freedom Square. On the eastern side, it adjoins the Ketchikyan mansion. The architecture of Sagir's house combines elements of classicism and baroque, characteristic of many pre-revolutionary buildings in Nakhichevan and Rostov. The mansion is distinguished by side buttresses with triangular pediments. The central part of the facade is adorned with five rectangular windows with decorative moldings, and the facade is topped with a cornice, which previously held stucco vases.

Originally, the southern part of the mansion housed a vestibule and a grand hall, while the northern part contained a living room and bedrooms. The basement was occupied by utility rooms. The grand hall was visually divided by pilasters decorated with caryatids and atlantes. The walls were decorated with cornices and friezes, and three stucco ceiling medallions were located above.

It is believed that the building's design was developed by the famous Nakhichevan-Rostov architect Nikolai Naumovich Durbakh. Until 1906, the construction client Sagir lived in the house with his family, after which he sold the building to Mrs. Shelgunova. In the early 1910s, the mansion was rented by entrepreneur Kamershtein, who opened one of the city's first cinemas, 'Eldorado.'

After the arrival of Soviet power, the building was nationalized, and the cinema was renamed in honor of the 3rd International. Three years later, it was named 'Casino,' and by the end of the 1920s, it became known as 'Spartak.' Over time, the mansion suffered greatly, losing the awning over the entrance and part of the stucco decor.

With the change of equipment in the cinema, the layout was altered, and a new entrance was created. In 1999, repairs were conducted under the guidance of architect G. Shevchenko for the city's anniversary. Architect and restorer Lyubov Voloshinova noted the poor quality of the repairs: the basement was faced with small-sized cement tiles, the color scheme was changed, and modern metal awnings were installed. Despite its status as a historical heritage site, the building continues to undergo significant changes in appearance.