The Sloan Great Wall (SGW) is an element of the Large Scale Structure (LSS), discovered in 2003 in the Sloan Digital Sky Survey (SDSS). It is a billion light-years away, is 1.3 billion light-years across and appears in the southern sky, within the constellations Corvus, Hydra, and Centaurus. It includes several Superclusters.
It displaced the Great Wall as the the largest known structure in the universe until the 2013 discovery of the Hercules-Corona Borealis Great Wall (Her-CrB GW). It has been suggested it is not a single structure but three structures in alignment.
Hercules-Corona Borealis Great Wall (Her-CrB GW)