Lahznimmo Architects has completed the Powerhouse Castle Hill in northwest Sydney, an imposing shed-like storage facility wrapped in corrugated aluminium and concrete.Owned and operated by the Powerhouse Museum group, the 9000sqm facility is intended as a public-facing storehouse containing a mix of storage, exhibition and conservation facilities, alongside spaces for research and community engagement.The expansion of the Museums Discovery Centre, Powerhouse Castle Hill was delivered to bette...