AIRVŪZ STAFF NOTE :
Contributor JohnnyWong created this drone video of the Hong Kong–Zhuhai–Macau Bridge, one of the world's largest infrastructure investments. It's actually not a single bridge but three bridges, an underwater tunnel, and a series of artificial islands. It connects the cities of Hong Kong and Macau, the two main cities at the mouth of the Pearl River estuary, both of which are semi-autonomous regions within China. The span was completed in early 2018, and cost nearly US $20 billion to build.
Description: The Hong Kong–Zhuhai–Macau Bridge (HKZMB) (simplified Chinese: 港珠澳大桥; traditional Chinese: 港珠澳大橋) is a complex sea-crossing project, which consists of a series of three cable-stayed bridges and one undersea tunnel spanning the Lingdingyang channel, that connects Hong Kong with Macau and Zhuhai, three major cities on the Pearl River Delta in China. The 55-kilometre (34 mi) link is expected to cost 110 billion yuan ($15.9 billion). With its length, it would be among the world's longest and become one of the landmarks within the area.