Barcelona, Catalonia, Spain, satellite image. North is at top, water is blue and urban areas are grey. The city of Barcelona is located in the region of Catalonia, between the rivers Llobregat and Besos. Both rivers end in the Mediterranean Sea beyond the coastline. It is the second largest city in Spain with a population recorded in 2005 of around 1.5 million. Photographed on 10th August 2000.