In 1748, he was called to Naples along with a team under Luigi Vanvitelli, to work for the new Bourbon King of Naples Charles III, King of the Two Sicilies. Here Fuga worked as one of the court architects in renovations to the Naples, where the king and his progressive minister Bernardo Tanucci were changing the face of the city, opening new neighborhoods, driving new arterial avenues and promoting some social and economic modernizations in the backward kingdom. The immediate part of the urban planning involved, for example, the construction of the colossal "Albergo dei Poveri" with a gray stucco front extending of 354 m. It was intended as a hospice to shelter 8,000 poor from all over the kingdom (segregated by sex and age) but especially the "street people" of Naples, a project which was realized only in part. Fuga's final design, centered on a hexagonal church, devoted one courtyard to each of the intended social classes— men, women, boys and girls—each with their separate entrance. Construction was begun in July 1751. After the departure of King Charles to take over the crown of Spain, work slowed, and when it finally ceased in 1819, three of Fuga's five courts were completed, as they may be seen today, damaged by the earthquake of 1980 and closed.