In the middle of a crazy city like Sao Paolo, unbearable traffic and skyscrapers, find the Ibirapuera park. It is an oasis of peace. In my case I love sports and whenever I travel I look around part of a city while running. I recommended this park. You can enjoy fantastic nature while you take a walk. There are a few basketball courts and football pitches, children parks, lakes, a street vendor and a bar to have a drink. Warning: do not go after dark.