The name Rastro means street, and the market received its name for its past as a slaughterhouse from the 16th century. The streets were paved with blood, as butchers carried the animals from the hills where they were slaughtered to the square below.
Actually, many locals come here for a classic Sunday - visit the market in the morning, and from there go to lunch and entertainment in the squares of Santa Ana or the La Latina area, a concentration of recommended tapas bars, for an outing that mostly ends in the small hours of the night.
Vendors of antiquities come to the Madrid flea market from around the world to buy and sell their products. You can find here more or less everything - starting from shoelaces, working tools, furniture from past centuries, ancient and luxurious design items.
Don't forget to haggle, vendors here will ask high prices for their products. Be sure to protect your personal items from pickpocketers.
Arrive early - especially in summer. There are more finds and fewer crowds.
Feel free to haggle! It is allowed and accepted here.
Beware of pickpocketers - bring only what you absolutely need here. Don't leave your phone and wallet in your back pocket, and place your backpack in front of your body.
Hungry? Next to the market there is the best concentration of tapas bars that are nice and delicious, with great beers.