Bushehr is the capital city of Bushehr Province, Iran. Bushehr lies in a vast plain running along the coastal region on the Persian Gulf coast of south-western Iran. It is built near the ancient port city of Rishahr. It was the chief seaport of the country and is the administrative center of its province. Bushehr is at a distance of 1,218 kilometres (757 mi) from south of Tehran. Bushehr has a desert climate. It was considered the main trade center of Iran during the past centuries. The city structures are traditional in style, modest in proportion and cost. Bushehr is a really important port in Persian Gulf that has an international airport. The old section of central Bushehr has many examples of traditional Persian Gulf architecture from the period 1870 to 1920. There are also some highways that connect the city to surrounding cities. A secondary coastal road links Bushehr to Bandar-e Abbas to the southeast. Bushehr has a hot semi-arid climate with a precipitation pattern resembling a Mediterranean climate.