The Flea Market is open Saturday, Sunday, and Monday from 9:30 in the morning until 6 in the evening. It's a great place, a market to beat all markets, if Portobello will forgive my saying so! It began in the 19th century as a result of a ban on second-hand dealers and junk stores in the city of Paris; those involved decided to pick up and set up shop outside the limits of the city. Gradually, the market established itself in the town of St. Ouen and grew in fame during the early 20th century when newspapers reported that amid the piles of junk you could find some truly exceptional pieces.
The belief continues today and the market is one of Europe's largest and busiest. They say it is the fourth most-visited place in France, and the second in Paris. You can find literally everything: antiques, furniture, collectibles, second-hand goods, clothes, etc.
Located in the north of the fascinating Le Marais neighborhood, the Carreau du Temple is a beautiful iron and crystal building that was originally built in 1863 and is currently undergoing renovation.
The market is open from Tuesday to Saturday from 9-19:00 and on Sunday mornings. If you walk through the zone on a Friday or Saturday afternoon, you'll also find hordes of vendors selling antiques and some of the most varied, beautiful, and unique objects imaginable. Rue de Turenne, a picturesque and bustling street full of delis, is also nearby. This is, according to many Parisians, the culinary heart of Le Marais. You can't miss it.
This market takes place every Saturday on Avenue Auguste Blanqui, from Place d'Italie to Denfert Rochereau. It is a place where you find stuff, cheap souvenirs of the city, hats, clothing, usually pretty low quality, but fashion accessories which you can wear for a time, priced well. In general there are many people in the neighborhood, and few tourists. Chinatown starts here, and around, many stores have cheap imports from China and Asia as well. I like the selection of flowers there, and some ideas for gifts for the holidays.