Sacyr, S.A. engages in the development and operation of infrastructure concessions worldwide. It is involved in the infrastructure development, such as transportation, sanitation, water, and waste treatment; development of large-scale civil engineering, industrial transport infrastructure, and building projects; water treatment, purification, desalination, purification, and reuse, as well as operation and maintenance of facilities. The company was formerly known as Sacyr Vallehermoso S.A. and changed its name to Sacyr, S.A. in August 2013. Sacyr, S.A. is based in Madrid, Spain.