Abraham Koop's mansion was built in 1907, and today the tuberculous dispensary is located in this building.
In the architecture of the mansion are connected several styles, experts refer it more to the «Art Nouveau» – the German version of Art Nouveau. The structure is also characterized by a variety of decorative details. Similarities with the palace house is attached and its roof – it is made in the style of the French chateau. Another historical feature of the building was the office of the so-called «American Mennonite Aid» here in the early 1920s. Here they helped to cope with the consequences of crop failure and drought, more simply – with hunger. The dining room or «American cuisine» was located in the neighborhood – in the house of Dick (just below the Koop house along Serikov's street).