Positano was a port of the Amalfi Republic in medieval times, and prospered during the sixteenth and seventeenth centuries. By the mid-nineteenth century, however, the town had fallen on hard times. More than half the population emigrated, mostly to Australia. Positano was a relatively poor fishing village during the first half of the twentieth century. It began to attract large numbers of tourists in the 1950s, especially after John Steinbeck published his essay about Positano in Harper's Bazaar in May, 1953: "Positano bites deep", Steinbeck wrote. "It is a dream place that isn't quite real when you are there and becomes beckoningly real after you have gone." The church of Santa Maria Assunta features a dome made of majolica tiles as well as a thirteenth century Byzantine icon of a black Madonna. According to local legend, the icon had been stolen from Byzantium and was being transported by pirates across the Mediterranean. A terrible storm had blown up in the waters opposite Positano and the frightened sailors heard a voice on board saying "Posa, posa!" ("Put down! Put down!"). The precious icon was unloaded and carried to the fishing village and the storm abated.