Did I read in your book that seniors get in free to Museums or galleries in Madrid. eg. The Prado or Reina Sofia.
Michael,
I believe that only EU senior citizens get the discount. We were there 2 years ago and my husband (78) paid to get in to both museums.
Spain appears to be the only country that does not require EU citizenship or at least it was that way two years ago. All we did was show the passport. Whether that is uniform everywhere, I do not know. It worked in Madrid, Cordoba, Seville and Granada but we did have to pay for admission to the Alhambra. There is a 5E senior card for the trains which is great.