BHP Billiton in Hassell-designed Brookfield Place

BHP Billiton in Hassell-designed Brookfield Place - BHP Billiton in Hassell-designed Brookfield Place - architecture | building | city | commercial building | condominium | corporate headquarters | daylighting | daytime | downtown | facade | headquarters | landmark | metropolis | metropolitan area | mixed use | sky | skyscraper | structure | urban area