STRABAG SE is an Austrian international technology group for the built environment based in Spittal an der Drau, Austria, with its headquarters in Vienna. It is the largest construction company in Austria and one of the largest construction companies in Europe. The company is active in its home markets Austria and Germany and in all countries of Central, Eastern and South-East Europe, in selected markets in Western Europe, on the Arabian Peninsula, as well as in Australia, Canada, Chile, China and India. In these markets STRABAG has subsidiaries or operates on a project-basis. Wikipedia