Some time ago, I did a podcast on my experiences with Argentine Tango dancing. Tina Baumgartner interviewed me and put it up. The link is here: http://avariedlife.com/passion-for-tango/
Victoria Falls is by itself an amazing wonder. But about three or four times a year, an amazing phenomenon occurs. During the nights of the full moon, there is enough light to create a lunar rainbow over the falls. This happens in the months of June and July, when it is winter in the southern hemisphere.
At the same time, the water over the falls is at its maximum. In the summer months, there is less water, with the Zimbabwe side seeing the most, and the Zambia side mostly dry. But in the winter, there is a single sheet of water all across the falls.
The Avani Livingstone Resort on the Zambia side is probably the best place to see the falls from. It is right next to the falls, and it takes about 5 minutes to get to the view sites by foot on the falls trails.