This is a card from Marta, one of the 'GTKY' girls. She went on a road trip to Spain and met up with some other postcrossers there.
Pictured is the Plaza Mayor in Salamanca, Spain . It looks like such a beautiful place, especially this night view. I just love this card. Thank you so much Marta. Hugs!
Here are the signatures of those who were lucky enough to be there. Some day I hope to maybe have my name on one of those cards. It would be so awesome to actually meet up with some postcrossers in real life.
Also very cool and colorful stamp and a very legible postmark.