By Xiu Ying, Contributing Reporter
RIO DE JANEIRO, BRAZIL - On the last Sunday of each month, Paulistanos, tourists or anyone interested may join a free walking tour through downtown São Paulo. The morning walk takes visitors through some of the major spots in the central region.
These include the Mário de Andrade Library, the Municipal Theater, the Anhangabaú Valley, the Martineli Building, the Santander Lighthouse, the Banco do Brasil Cultural Center, the Patriarca Square, and the museum with the Shopping Light collection.
There are guides specialized in the city's history and architecture who share facts that even . . .