In Zambia part of the waterfall is located in the Mosi-oa-Tunya National Park. And in Zimbabwe in the Victoria Falls National Park. Just like the Niagara Falls this waterfall crosses a border.
The river Zambezi flows down here. It seems to me a very exciting experience to go swimming in the Devil's Pool. You can swim almost to the edge of this big waterfall. They say it's not dangerous, because there's little current.
Still, it looks pretty dangerous. Especially after seeing this video.