Cape D'Aguilar Lighthouse is one of the declared monuments of Hong Kong. It is also known as Hok Tsui Beacon. The lighthouse is one of five pre-war surviving lighthouses in Hong Kong; it is also the oldest lighthouse in Hong Kong. Two of the five lighthouses are on Green Island while the other three are at Cape D'Aguilar, Waglan Island and Tang Lung Chau respectively. Waglan Lighthouse and Tang Lung Chau Lighthouse are also declared monuments of Hong Kong.