Victoria Falls is the largest curtain of water in the world, spanning more than a mile along the Zimbabwe-Zambia border. From the Zimbabwean town of the same name, a full-frontal view of its majestic power is within walking distance. It's also ground zero for adrenaline junkies, offering bungee jumping, whitewater rafting down the Zambezi River and microlight flights. Wildlife-packed game parks and sunset river cruises among wallowing hippos add to the local thrills.