The sturdy mansion No. 30 on Pyatnitskaya Street represents an urban manor from the 18th-19th centuries with preserved wings (buildings 1 and 2). The facade of the building, completed in the mid-19th century, is adorned with diamond rustication and a small attic above the second floor. Exact information about the owners of the house at that time is lacking, but it is known that the building survived the fire of 1812, which gives it special significance. In the early 20th century, the manor belonged to hereditary honorary citizen Nadezhda Petrovna Gagman.

The manor is a classic example of a house with mezzanines. If you peek into the courtyard, you can notice small windows above the second, main floor; these are the mezzanines, representing an upper half-floor. Mezzanines usually housed living rooms, children's storerooms, or rooms for servants. It is important not to confuse a mezzanine with a loft: a loft is an extension above the upper part of the house, narrower than the facade. A mezzanine, on the other hand, is a large-volume half-floor that can be located not only on the top floor. Old Moscow had many such houses with mezzanines.

In addition to the mezzanines, house No. 30 is notable for another feature. In the courtyard of the mansion, there is a real vineyard. Although it is small, just like the cozy courtyard itself, it is a true rarity for the center of Moscow.