In countries like India or Mongolia, visitors can still witness, respectively, authentic local traditions or remote landscapes. But where can they do both? The answer is Ethiopia, an East African nation that is emerging as a destination for travelers in search of an unspoiled place on the verge of a tourism discovery. In the past two years, Ethiopia has seen the advent of plush properties and direct U.S. airline flights. Meanwhile, a steadily growing economy and a reform-minded prime minister ha...