This museum houses relics of Heiankyu sake-no-tsukasa (the office in charge of the imperial use of sake, sweet sake, or vinegar etc.) soko (storage site), where tiles are placed indicating the pillar holes positions of the warehouse.
現地には平安宮造酒司倉庫跡地があり、柱の穴の跡がタイル張りで残されている。