Catalonia profile - BBC News
The History of Barcelona, in 26 Interactive Maps - Bloomberg
Map of Barcelona City in the second half of the 19th century.
Evolving demographics, Barcelona MetrΓ²polis
Barcelona Fact File - Twinkl - Geography (teacher made)
The History of Barcelona, in 26 Interactive Maps - Bloomberg
Frontiers Climate change - induced hazards on touristic island beaches: Cyprus, Eastern Mediterranean
Spain Facts for Kids, Spain for Kids, Geography, Attractions
Watch as the world's cities appear one-by-one over 6,000 years - Metrocosm
Facilities and Areas of Jurisdiction - United States Department of State
Population - BArcelona
Urban planning of Barcelona - Wikipedia