Copan building was designed by Oscar Niemeyer, who is the most famous Brazilian architect. It is a well-known image of São Paulo because of its characteristic curves.
Copan use to be home for wealthy and artsy people but now it is not a fancy place anymore. It is worth a look and Terraço Itália, a restaurant on the top of a nearby building, Italia Building (Edifício Itália), offers a panoramic view of the city including Copan building.
Fun fact: Some people say Copan Building is haunted by ghosts of its older habitants.
Address: Avenida Ipiranga, 200, Republica.