My aim is not to create a full classification of heterotopias, but to examine my examples with the help of Foucault’s ideas. I only wanted to reveal with his examples how heterotopias can be divided into smaller and smaller groups. My main concern will be the sites, heterotopias in modem cities. They contain several heterotopias; one can find numerous examples if one thinks about space in this respect. To narrow the target of my focus, I say that I am not going to concentrate on all kinds of heterotopias of the cities—I am interested in modern phenomena, results of changes which happened in the previous decades—I am interested in the phenomena of single and homosexual lifestyle in modern cities, and the effect of single lifestyle and the sites which these people create for themselves and live their lives there, where they spend most of their time.