Kapka Kassabova left Bulgaria as a teenager after the collapse of the Soviet Union. Her family settled in New Zealand, where she began her career as a poet, travel writer and memoirist. Many years later, Kassabova returned to the land of her communist childhood to cross the once forbidden border between Bulgaria and Turkey and Greece. She wrote about this journey in her extraordinary 2017 book, Border: A Journey to the Edge of Europe, which traces the region's history and mythology. *This episode originally aired Feb. 11, 2018.