I just noticed this snippet in my daily news email. Madrid is #4 and Barcelona #9 on the list of the wealthiest European cities. Combined, they still don't match the wealth of London, however:
With a gross domestic product of 158 billion ($232 billion) in 2001, London far outpaced its Western European rivals on a list of the region's biggest economies by Barclays Private Clients, a service of the international banking giant. Frankfurt led in GDP on a per-capita basis, with $68,000. The 10 European cities that generated the most wealth, and their GDP (in billions), according to Barclays:
1. London $232
2. Paris 130
3. Milan, Italy 108
4. Madrid 96
5. Rome 85
6. Berlin 72
7. Hamburg, Germany 67
8. Munich, Germany 66
9. Barcelona, Spain 63
10. Stockholm 54
Agence France-Presse/ The Guardian
-Russ