Large-scale engineered systems assembled from many interdependent components working together toward a shared function, as distinct from a single invented device, technique or material considered alone -- national power grids and electrical transmission networks, water and sewage treatment systems, satellite positioning and navigation constellations such as GPS and Galileo, particle accelerators, and major industrial manufacturing and assembly-line systems. Belongs here: named systems characterized by multiple integrated engineered subsystems serving one overall function, such as a national power grid, the GPS satellite constellation, the Large Hadron Collider, or a landmark canal or dam considered as an engineering system rather than merely a structure. Does not belong here: a single discrete invention or device, filed under Invention; a raw or engineered material, filed under Material; a named engineering technique or process, filed under Method; an individual engineer or inventor, filed under Engineer; vehicles and transport-specific infrastructure and networks, which belong to the Transport atlas; and software and computing systems, which belong to the Computing atlas's own System entity type.