Madrid's vast open-air flea market, held every Sunday morning and on public holidays in the streets south of Plaza de Cascorro in La Latina. Several hundred stalls spread across half a kilometre of streets — Calle Ribera de Curtidores is the spine — selling everything from genuine antiques and vinyl records to fake football shirts, second-hand books, leather, hardware, vintage cameras, and a fair amount of straightforward junk.
The market is at its best from about 11 am to 2 pm. Bring small notes, expect to bargain, and watch your pockets — pickpockets work the densest crowds. The whole excursion is normally finished off with a long lunch and beer in the surrounding La Latina bars (Cava Baja is a few streets away). The permanent antique shops in the area open every day; the street market itself is Sunday only.