My husband and I are going to Madrid, Seville and Granada at the end of April-early May. Rather than buy a bunch of junk we won't use for more than a few years, we would like a really nice "souvenir" from our trip, preferably a nice painting. Does anyone know of a good art gallery, or even a street with a group of art galleries, in Madrid, Seville or Granada?

BTW, our taste is more traditional than modern (but we are openminded!), and we would be looking to spend around $500 USD, but might pay more for something really fabulous. When we were in San Francisco a few years ago, we saw some really wonderful still lifes by a Spanish artist, but they were very expensive (around $10,000!!). This is the kind of thing we had in mind, just hopefully at a MUCH better price!