Five top books on unusual journeys

Christopher Clark is a professor of modern European history and a fellow of St. Catharine's College at the University of Cambridge, UK.  His latest book is The Sleepwalkers: How Europe Went to War in 1914.

For the Wall Street Journal, Clark named five top books about unusual journeys, including:
The Little Prince
by Antoine de Saint-Exupéry (1943)

In this book, a childhood favorite that I have