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1. Has a larger metro system.
2. Has more precipitation.
3. The international airport of this city is named after a spanish prime minister.
4. The most successful football club of this city has won the Champions League 15 times.
5. Is located closer to the Prime Meridian.
6. Telefónica is headquartered there.
7. Is the capital of Spain
8. The urban area is the largest in Europe beginning with that letter.
11. Has a higher elevation.
12. Is home to the Sagrada Família.
13. Has hosted the Olympics.
15. Lies on the same longitude as Paris.