Abadan: Before, Abadan was considered as the most modern city in the Middle East and Iran. It is the second most significant city in Khuzestan, next to Ahvaz. Abadan is famous for being the first city to have a refinery in the Middle East and Iran, an inner-city bus line, an open-air cinema, a pizzeria, a kindergarten, a telephone taxi, a car track, a motorcycle track, a golf course, a squash hall, and a billiard hall. The first petrochemical plant in Iran is also part of its history. Abadan is situated on the plain and has a tropical climate. The hottest months are July and August, with temperatures soaring up to 58 degrees Celsius. In contrast, the coldest time is in the middle of winter, with the temperature dropping to zero degrees Celsius. Abadan is known for its high humidity, reaching up to 89% or more during winter. History The region now known as Abadan was historically referred to as Charax Spasinu, named for the Seleucid ruler who once resided there. Following its acquisition by the Parthians, it became known as Abadan. Later, during the Sassanian era, it was renamed Ardeshir, while the Bahmanshir River retains its ancient name. Abadan was strategically chosen as the location for a refinery due to its proximity to Khorramshahr, Masjedsoleyman, and Arvandrud. At the time of construction, the land belonged to Khazʽal Ibn Jabir, who agreed to lease it to the English company responsible for building the refinery. Today, Abadan boasts several historical landmarks, including the Rangooniha Mosque and the Church of Abadan.