The Benedito Calixto square is just another normal place on weekdays, but turns into one of São Paulo's coolest spots on saturdays. Locals go to the market held there looking for all sorts of items - especially antiques. Plus, the square surrounding is full of places where you can have great food, shop for trendy items and check out art galleries
Going to this market is simply one of the best things to do on a São Paulo saturday afternoon. You can have great traditional food from all around Brazil, see some antiques or fashion items and meet new people on this place where things from all cultures and sorts mix in a local style
From 14:30 to 18:30 there's a band playing "chorinho" (brazilian music style from the 19th century) on the square that is worth checking!