The continents of Africa and Asia are vast, sprawling together along the edges of the Atlantic, Indian, and Pacific oceans. The experiences you can enjoy in these places are mind-boggling in their uniqueness, from rhinoceros treks in authentic preserves to educational tours of an A-bomb museum built on the very soil where the world's largest explosion ever occurred. Whether you want the wildest of wildlife or the most potent history of human civilization, a cruise to one of these places will provide it.