Volos ( ) is a coastal port city in Thessaly situated midway on the Greek mainland, about north of Athens and south of Thessaloniki. It is the sixth most populous city of Greece. It is the capital of the Magnesia regional unit of Thessaly Region. Volos is the only outlet to the sea from Thessaly, the country's largest agricultural region. With a population of 144,449 (2011), it is an important industrial centre, while its port provides a bridge between Europe and Asia.