Lisbon's flea market is called locally the Feira da Ladra, often thought to mean "Thieve's Market" (in Portuguese "ladra" is a woman thief) but it actually derives from "ladro," a bug found in antiques. A market of this type is thought to have been in place in Lisbon since the 12th Century and the name Feira da Ladra was first mentioned in the 17th Century.Today, the traders here are perfectly legal, many of them gypsies showing their wares in the Campo de Santa Clara street, in the district of Alfama. The market starts at the Arco de São Vicente, an arch near where the famous Tram 28 stops.From the market, the impressive Santa Engracia Church, or the National Pantheon, can be seen standing proudly just a short walk away (see photo).The market is held every Tuesday and Saturday, from dawn to dusk. A myriad of small stalls sell all sorts of second-hand and new products, and other traders simply display their store on a stretched-out blanket.Hand-made artisan goods, CD's, books, clothes, stamps, coins, military objects, antiques and furniture is all on display here, so the occasional bargain is still possible although many of the stores now seem to cater exclusively to the tourists.Ride Lisbon's metro, buses, and trams for FREE with the Lisboa Card.