Hercules–Corona Borealis Great Wall or the Great GRB Wall is a massive galactic superstructure in a region of the sky seen in the data set mapping of gamma-ray bursts that has been found to have an unusually higher concentration of similarly distanced GRBs than the expected average distribution. It is about 10 billion light-years long, 7.2 billion light-years wide, and almost 1 billion light-years thick.

Coordinates: RA 17h 0m 0s | Dec +27° 45′ 0″

Constellations: Hercules, Corona Borealis, Lyra, Boötes, Draco

Did you know: The largest known structure in the Universe is called the 'Hercules-Corona Borealis Great Wall', discovered in November 2013