Khorramshahr 's a port city in Khūzestān Province in southwestern Iran. It's approximately north of Abadan. The city extends to the right bank of the Shatt al-Arab (Arvand rod in Persian) waterway near its confluence with the Karun river. Estimates for the population vary widely between 338,922 (2006, (External Link)) and 624,321 (2005, (External Link)). History In ancient times it'd been known as Piyan, and later Bayan. The modern city was founded in 1812 by Sheikh Yusuf bin Mardo, w… (More on Khorramshahr)