Feria fija del libro

"Just outside of the southwestern entrance to Parque del Retiro, and on the border of the royal gardens, is a short promenade occupied by the numerous stalls of book vendors. On the weekend, the sidewalk springs to life with antique tomes, used books passed through many hands, and the occasional pristine new edition. It can be a dangerous spot for the bibliophile, but it's just as nice to browse the stalls and see what people are reading. Although most books sold are Spanish, there are a surprising number of English, French, and German titles scattered throughout, and art and photography books as well. Pick up a few books and the vendors might give you a bargain."