The Rusakov Workers' Club (Russian: Дом культуры имени И.В.Русакова (рабочий клуб)) in Moscow is a notable example of constructivist architecture. Designed by Konstantin Melnikov, it was constructed in 1927-28. The club is built on a fan-shaped plan, with three cantilevered concrete seating areas rising above the base. Each of these volumes can be used as a separate auditorium, and combined they result in a capacity of over 1,000 people. At the rear of the building are more conventional offices. The only visible materials used in its construction are concrete, brick and glass. The function of the building is to some extent expressed in the exterior, which Melnikov described as a "tensed muscle".