Condenses over 450 years of Sampa history into a long but fascinating 'Old Downtown' walk four times a week at 11:30am. The tour meets next to the C.I.T. (tourist booth) at Praça da República and ends 3½ hours later at Largo São Bento; and there's walk-exclusive discounts to be had along the way. Reservations unnecessary – just show up 20 minutes prior.
Other tours they run include Paulista Ave tour covers the modern city every Tuesday, Thursday and Saturday at 3:30pm, leaving from Banco do Brasil at the corner of Paulista and Rua Augusta on the Jardins side and ending 3¼ hours later at Praça Oswaldo Cruz. An artsy, graffiti-heavy tour in Vila Madalena leaves from just outside Fradique Coutinho metro station on Tuesdays, Thursdays and Sundays at 11am, ending around 2pm at Largo da Batata near Faria Lima metro station.