1973 The Bosporus Bridge in Istanbul, Turkey is completed, connecting the continents of Europe and Asia over the Bosporus for the first time.

• 位于土耳其伊斯坦布尔，跨越博斯普鲁斯海峡，连接亚洲和欧洲的博斯普鲁斯海峡大桥落成启用。