Hochtief AG

Hochtief Aktiengesellschaft is a German construction company based in Essen, North Rhine-Westphalia, Germany. Hochtief is Germany's largest construction company and operates globally, ranking as one of the largest general construction companies in the United States through its Turner subsidiary, and in Australia through a 53.43% shareholding in CIMIC Group. In 2010 it employed more than 70,000 employees across five corporate divisions. One of these, Hochtief Concessions, is a major airport operator. The others are involved with construction project planning, finance, construction and operation. Work done in 2010 was €23.23 billion, with more than 80% coming from operations outside Germany. Source: Wikipedia