Human’s life space usually decreases along with their age. Thanks to certain global and local solutions it may remain broader and serve healthy ageing and maintaining quality of life. Life space of the seniors is a crucial issue of the social gerontology. This article refers to the problems of the city space that may stimulate or devitalise active, healthy lives of older people and their propitious old age. According to the agreements of the World Health Organisation a hospitable city for old people is the city that takes care of the following for its seniors: public space, transportation, accommodation, social participation, integration, employment, communication and information, support of the environment and health care. A serious threat for the quality of life of the growing urban population is shrinking of the public space and growing of the private space. The city space should not favour any of the age groups as everybody ages, irrespective of their age. The space must support building the relations between generations. In Poland many cities try to join the global network of the places open for older people. In 2016 Poznań: joined this network. This is a very prestigious distinction but also a liability for the city.