The 15-minute city is a residential urban concept in which all city residents are able to meet most of their needs within a short walk or bicycle ride from their homes. The concept was popularized by Mayor Anne Hidalgo of Paris, who was in turn inspired by French-Colombian scientist Carlos Moreno. It has been described as a "return to a local way of life. 15-minute cities are built from a series of 15-minute neighborhoods, also known as complete communities or walkable neighborhoods.