San Carlo all'Arena is a neighbourhood of Naples, southern Italy, to the north-east of the old historic center of the city. The area centers on the gigantic Bourbon Hospice for the Poor on the square, Piazza Carlo III, named for Charles III the first Bourbon king of Naples. It is named after the Church of San Carlo all'Arena.
Coordinates: 40°52′17″N 14°15′34″E / 40.87139°N 14.25944°E