Fodor's Expert Review El Rastro
Named for the arrastre (dragging) of animals in and out of the slaughterhouse that once stood here and, specifically, the rastro (blood trail) left behind, this site explodes into a rollicking flea market every Sunday 9–3 with dozens and dozens of street vendors with truly bizarre bric-a-brac ranging from costume earrings to mailed postcards and thrown-out love letters. There are also more formal shops, where it's easy to turn up treasures such as old iron grillwork, a marble tabletop, or a gilt picture frame. The shops (not the vendors) are open during the week, allowing for quieter and more serious bargaining. Even so, people-watching on Sunday is the best part.