A leading author on sustainable development Herbert Girardet (Herbert Girardet – eng.) considers that public spaces and parks form a crucial feature of liveable cities. Unlike in many 19th-century cities, frequently not enough space is kept aside for them. Too often, attractive, safe and well-maintained spaces are located in privately owned, enclosed shopping centres. Yet public parks are important for people. From whose lives the experience of green space and biodiversity has gone missing. [1] Enrique Penalosa (Enrique Peñalosa – spa.), former mayor of Bogota (Bogotá – spa.), observes that parks and public spaces are important to a democratic society because they are the only places where people truly meet as equals. Parks are also essential to the physical and emotional health of a city. However, this is not obvious from most budgets, where parks are treated as somewhat of a luxury. Roads, the public space for cars, receive infinitely more resources and less budget cuts than parks, the public space for children. [2] In Enrique Penalosa opinion parks play many non obvious roles in constructing a society. However, one of the most important is to make cities more egalitarian.