The term multifamiliar is a common name used in Mexican architecture, urban planning and design to refer to multi-story, high-density buildings designed to house multiple families in the same space. These are usually organized in a closed area, with services of their own (ranging from stores and entertainment to schools and hospitals). Mario Pani, the Mexican architect, is known for popularizing the term and leading the construction of multiple social housing projects with this type of building in the twentieth century.