In 2007, the Mikhail Bulgakov Museum, known as "The Unpleasant Apartment," opened, described in the novel "The Master and Margarita." In this communal apartment No. 50 at 10 Bolshaya Sadovaya Street, Bulgakov lived from 1921 to 1924.

The building was constructed in the Art Nouveau style in 1902-1903 by architects Edmund Yuditsky and Anton Milkov on the order of Moscow merchant Ilya Pigit, owner of the "Dukat" tobacco factory. The building was named "Pigit House." Initially, a production facility was planned, but due to a ban by Moscow authorities on factories within the Garden Ring, the building became a tenement house with three residential blocks and a section for art studios.

One of the studios was used by artist Vasily Surikov, while studio No. 38 was rented by Nikolai Ryabushinsky, a patron and editor of the magazine "Golden Fleece." From 1910, artist Pyotr Konchalovsky worked here, moving to studio No. 40 in 1917, where he and his son Mikhail worked until 1996. Studio No. 36 was rented by Nikolai von Bool, manager of the Moscow office of the imperial theaters.

In 1918, the house was nationalized and became a workers' commune. In 1919, the first communal apartments appeared here. In one of these apartments, Fanny Kaplan spent the night before her assassination attempt on Lenin.

In the 1920s, communal apartments were filled with workers, including employees of printing houses and the "Dukat" factory. In 1920, theatrical artist Georgy Yakulov occupied studio No. 38, where poet Sergey Yesenin met Isadora Duncan at one of the parties.

In the autumn of 1921, Mikhail Bulgakov moved here with his wife Tatyana. In apartment No. 50, he wrote "The White Guard," "Diaboliad," "Fatal Eggs," and "Notes on Cuffs," which brought him fame. In 1924, Bulgakov moved to another apartment.

Communal apartments remained in the building until the 1960s. In the 1980s, the building attracted media attention as Bulgakov's residence. In 1989, events were held in his honor at Patriarch's Ponds, and in 1990, the Mikhail Bulgakov Foundation was established under the leadership of Marietta Chudakova. In 1994, the premises were transferred to the foundation to create a museum, which opened on May 15, 2007.

The museum's exhibition includes over three thousand items, divided into historical and literary sections. Special effects are used in the corridor to create the atmosphere of the "unpleasant apartment." The cloakroom features suitcases and umbrellas symbolizing the writer's travels. From the hallway, one can enter the Blue Study, restored based on the memories of Bulgakov's friends. Here, original furniture and the writer's desk are displayed. In the corner of the study are Bulgakov's wife's wardrobe and a secretary. The study also contains a piano and a bureau.

A separate room is dedicated to the history of Pigit House with documents and photographs. In Bulgakov's room, part of his library and a typescript of the play "Moliere" are kept. The kitchen symbolizes the social changes of the 1920s. The living room hosts performances and concerts, while exhibitions are held in the white hall.

In 2015, the museum was given the memorial studio of Pyotr Konchalovsky. A branch of the museum is planned to open in the apartment on Bolshaya Pirogovskaya, where Bulgakov lived from 1927 to 1934 and wrote the play "Running" and began the novel "The Master and Margarita." The apartment is under reconstruction and will be transferred to the museum after the work is completed.