China is celebrating the opening of the world's longest sea-crossing bridge linking the cities of Hong Kong, Macau and Zhuhai. The Hong Kong–Zhuhai–Macau Bridge is a bridge–tunnel system, which consists of a series of three cable-stayed bridges and one undersea tunnel, as well as two artificial islands. The bridge is 55 kilometers long.

There are thousands of bridges dotting the landscapes around the world, that can be called true architectural masterpieces. Some of them - in this photo gallery by TASS.