The Big Spill The Victoria Falls was created by a shift in river systems that began by geological upheavals in southern central Africa some 15 million years ago. Evidence suggests that prior to this, a very different river system existed, and that the upper and lower Zambezi Rivers were not linked at all.

This question usually refers to the Victoria Falls Bridge, as the falls themselves are a natural wonder of the world. The bridge was built in 1905 as a central component of Cecil Rhodes' "Cape to Cairo Railway" project. Rhodes' vision was to create a continuous rail link spanning the entire length of the African continent under British control. Specifically, he insisted the bridge be built at a location where passengers on the train would "catch the spray of the falls" as they crossed the Zambezi River. Beyond the romantic vision, the bridge served a vital economic purpose: it opened up "Northern Rhodesia" (now Zambia) for the extraction of copper and timber and provided a much-needed link for freight moving between the coast and the interior. It was a feat of Victorian engineering, designed as a steel parabolic arch that could be constructed without scaffolding over the 128-meter deep gorge. Today, it remains the only rail link between Zimbabwe and Zambia and is a historic landmark. If you were asking about the "Falls" as a construction, it's worth noting that humans did "build" the Victoria Falls Power Station, a hydroelectric plant designed to harness the river's immense energy.