In brief
The reinforced concrete structure allows for a monumental multi-purpose hall.
Useful to know
The Centenary Hall in Wrocław was built in 1911-1913 to a design by Max Berg. UNESCO sees it as an important stage in reinforced concrete architecture, with a large circular central space and a dome. [1]
Compare the plan with an inside view up. The central volume is not just a geometric figure on paper: it determines how people perceive the common space. When describing, distinguish the bearing structure from the function of a specific event. A multipurpose room can adopt different arrangements without the basic spatial idea changing.
Sources
For further detail and to check the information: