Obrascón Huarte Lain SA engages in the operation of administrative infrastructure concessions and construction. It operates through the following segments: Concessions, Engineering and Construction, and Development. The Concessions segment provides administrative infrastructure concessions, relating mainly to transport, car parks, ports and airports. The Engineering and Construction segment operates through three activities which include Construction, Industrial and Services. The Development segment develops and operates mixeduse hotel-related real estate projects. The company was founded on May 15, 1911 and is headquartered in Madrid, Spain.