"congress center" is correct and used in written English.
It usually refers to a large building or complex for congresses, conferences, and other events. For example, "The Madrid Congress Center is one of the largest conference centers in Europe."
Figure 1 - DAVOS, 25JAN10 - Last preparations on the podium of the World Economic Forum Annual Meeting 2010 in the congress center of Davos/Switzerland.
Outside the congress center in Essen, there was a heavy police presence as hundreds protested RWE's nuclear policies.
The Roman architect Massimiliano Fuksas is now conceiving an immense congress center on a highway built by Mussolini to connect center and sea.
Throughout the weekend, a huge wine fair takes place at the congress center in Beaune, with thousands of wines from scores of producers all over Burgundy.
We have deliberately chosen different types of buildings (modern office building, retirement home, modern congress center with large exhibition halls, and old arts center), in order to investigate the general applicability of the model.
The central part of the building is a disc which houses teaching spaces, a congress center, and a number of other facilities.
The new stadium, to be run by a state agency, would be a shining link in a chain that connects the city's massive convention center, the Georgia World Congress Center and Centennial Olympic Park.
This congress, focusing on 'Integrated cellular pathology and Systems Biology of human disease', gathered together more than 350 international scientists implicated in the different branches of OMICS at the European Congress Center in Luxembourg.
My first appointment of the day was in the Congress Center, which lies at the heart of the Davos village.
The clock began ticking for the rest, and the trendy Estoril Congress Center grew chaotic.
The show is physically situated in the Berlin Congress Center, with events running from noon to midnight.
