PORR AG engages in the development and construction of real estate properties. It operates through the following segments: DACH, CEE/SEE, Infrastructure, Environmental Engineering, and Holding. The DACH segment covers the operating business on the home markets of Austria, Germany, and Switzerland. The CEE/SEE segment includes operating business on the home market of Poland and the core markets in Central, Eastern, and South-Eastern Europe. The Infrastructure segment comprises of departments on tunneling, foundation engineering, railway construction, pipeline construction, structural engineering, power plant construction, and large-scale civil engineering projects. The Environmental Engineering segment bundles expertise in the fields of water, wastewater, waste, and environmental clean-up. The Holding segment consists of group services and PORREAL Immobilien Management GmbH and its subsidiaries. The company was founded by Arthur Porr in 1869 and is headquartered in Vienna, Austria.