T.R. Hamzah & Yeang is a Malaysian architectural firm founded in 1975 with headquarters in Kuala Lumpur, best known for designing green buildings and masterplans.
See:
T.R Hamzah & Yeang. "Profile." Accessed August 12, 2013.
A 21-storey, naturally ventilated office building. The wing walls are directed to catch prevailing winds, and windows and balcony doors are adjustable to control the rate and distribution of ventilation.