Barcelona is a major economic centre, with one of Europe's principal Mediterranean ports, and its airport is the second largest in Spain. Founded as a Roman city, Barcelona became the capital of the Counts of Barcelona and the Crown of Aragon. Besieged several times during its history, Barcelona is today an important cultural centre and a major tourist destination and has a rich cultural heritage. Particularly renowned are architectural works of Antoni Gaudí and Lluís Domènech i Montaner that have been designated UNESCO World Heritage Sites.
About 15 BC, the Romans redrew the town as a castrum (Roman military camp) centred on the "Mons Taber", a little hill near the contemporary city hall (Plaça de Sant Jaume). Under the Romans it was a colony, with the surname of Faventia, or, in full, Colonia Faventia Julia Augusta Pia Barcino or Colonia Julia Augusta Faventia Paterna Barcino. Mela mentions it among the small towns of the district, probably as it was eclipsed by its neighbour Tarraco (modern Tarragona); but it may be gathered from later writers that it gradually grew in wealth and consequence, favoured as it was with a beautiful situation and an excellent harbour. It enjoyed immunity from imperial burdens. The city minted its own coins; some from the era of Galba survive.
It is in my opinion a great city with a great multi ethnic population. More to come.