next to Madrid it's worth to visit:
Toledo: http://www.toledo-turismo.com/en
Segovia: http://visitsegovia.turismodesegovia.com...
The second biggest city in Spain is Barcelona:
http://www.barcelonaturisme.com/Themed-r...
An on another hand, Andalucia:
Sevilla: http://www.visitasevilla.es/en/que-ver
Granada: http://www.alhambradegranada.org/en/
Córdoba: http://whc.unesco.org/en/list/313
Wow! It's really great that you are planning to the wonderful place Spain. It's really a beautiful place to spend your vacations. If you want to enjoy your 7 days in this beautiful place, then you must hire a car on rent. Gerona airport provide car hire facilities and many more. Just visit the sources and enjoy the lavish facilities provided by Gerona airport and make your trip awesome.
Invest in a good travel guide book to Spain, and read it. Pick two cities at the most to visit, and just wander around and enjoy.
I just left Ibiza Spain a few days ago. I had a ball
I plan on visiting Spain for the first time in May. I don't know much about its various cities. Any suggestions on seeing the popular sites and the best of the best Spain has to offer? I have 7 days and enjoy good food and arcitecture. I'm not that into meuseums or art but appreciate them and am open to a few visits. Thanks