If you're a fan of live theater, book yourself a ticket for a show at Viga Espaco Cenico Theater. Check online for times and prices.
You'll soon find out why this Pinheiros arts and culture attraction is popular with travelers. If you're looking for other things to see here, Paulista Museum, Municipal Theatre of São Paulo, and Ibirapuera Park are in this area as well. They won't take you long to get to from Viga Espaco Cenico Theater.