Edificio Copan, São Paulo

Another modernist building by Oscar Niemeyer (1907-2012), Edificio Copan in São Paulo. According to Niemeyer's own site, he designed the building 1951 however construction did not commence for several years and was finally completed in 1966.

I particularly liked the spiral staircase at the rear which you don't often see in photos.

References:
Oscar Niemeyer Website
Edificio Copan Website
Edificio Copan, Emporis.com