Wikipedia
Sonargaon
Sonargaon (; also transcribed as Sunārgāon, meaning City of Gold) was a historic administrative, commercial and maritime center in Bengal. Situated in the center of the Ganges delta, it was the seat of the medieval Muslim rulers and governors of eastern Bengal. Sonargaon was described by numerous historic travelers, including Ibn Battuta, Ma Huan, Niccolò de' Conti and Ralph Fitch as a thriving center of trade and commerce. It served as the capital of Sultan Fakhruddin Mubarak Shah, Isa Khan and the Baro-Bhuyan Confederacy.
The area is located near the modern industrial river port of Narayanganj in Bangladesh. Today, the name Sonargaon survives as the Sonargaon Upazila (Sonargaon Subregion) in the region.