Castle Peak Bay
Yau Oi Estate () is a public housing estate in Tuen Mun, New Territories, Hong Kong near Light Rail Yau Oi stop. It was the third public housing estate built in Tuen Mun between 1979 and 1982 on reclaimed land of Castle Peak Bay. Consisting of 11 residential blocks, it was the largest single subsidized housing development in Hong Kong, with 9,153 units and a population of more than 35,000.