The Zambezi River forms a border between Zambia and Zimbabwe, and Victoria Falls is the spectacular sheet of water that plunges 350 feet into the rocky gorge that divides the two countries. Awestruck bystanders are showered in spray when runoff is high, and the mist is so heavy it creates a rain forest microclimate on the rim. Lined by two national parks on either side, this UNESCO World Heritage Site is an essential extension after a Botswana safari. Stay in luxurious accommodations in close proximity, and visit Victoria Falls on foot as part of your guided tour, following a network of trails to spectacular vantage points. The tranquil Zambezi River becomes a torrent as it pours over a mile-wide basalt cliff in a broad curtain. Feel the cool mist as you meander along rain forest walkways, then enjoy a relaxing boat cruise upriver at sunset, keeping an eye out for wildlife on the banks.