For me, the most beautiful place to watch the sunset in São Paulo is the «Praça Pôr do Sol». It's a small park on a hill in the district of Pinheiros. You can enjoy the absolutely beautiful view over the entire city while having a picnic, and you can stay until the sun slowly sets behind the city's skyscrapers. You can also watch the planes as they approach to land at the Congonhas airport, another highlight for all those who enjoy flying.
Praça Ignez Guimarães Soares Pestana
São Paulo, 05458-000