If the property is already zoned for a child care center, getting approval should be a snap--unless you're planning to serve hot meals for children, in which case you'll need to meet requirements similar to a restaurant's.

FORBES: How To Run A Child Care Center: Permits

Bakers would serve hot loaves of pan dulce (a sweet bread dotted with candied fruit) rumoured to be the best in the city, and famed cultural figures like tango stars idled away hours at the tables.

BBC: Preserving history in Buenos Aires