The Grand Mall of Qo'noS was a shopping mall still under construction on Qo'noS in 2401. It was to be the largest shopping mall in the Klingon Empire upon completion and to be of a similar size, or larger, than the Kartika Supermall, the largest shopping mall in the Lyran Star Empire.
Atenza, the historian of the Stoneship (BC-347), stated that, unlike the Kartika Supermall, which was completed in a two-year timespan, the Grand Mall was still unfinished after several decades of construction. (Star Trek: The Stoneship Files: "Dilithium Dance")
The Grand Mall of Qo'noS was completed in late 2401, with its owners having won an auction for a March 2010 Gros Photon (the University of Montreal physics student newspaper) issue, an issue that was later found over Du'Qot in a communications relay. (Star Trek: The Stoneship Files: "Rode the 300")