Fokionos Negri Street, now pedestrianised with numerous cafés and a park along its length, runs through the middle of Kypseli district.
According to wikipedia, Kypseli was bounded differently from today in 1908 after a study by the county engineer Athanasios Georgiadis
The clearly urban development of Kypseli began in the 1930s with the construction of family houses and of the first modern apartment buildings in Athens. The development of apartment buildings was contemporary with Kolonaki and other central areas with influences of the era such as Bauhaus and Art Deco.
Near large green areas such as Pedion Areos and Fokionos Negri Street pushed Kypseli to become an upmarket district with many apartment buildings built during the 1930s, 1950s and 1960s that addressed to the middle and upper-middle class.
Moreover, the shops by the streets helped Kypseli become a major shopping centre. Shopping districts were Kypselis Square,Patission Street, Kypselis Street, Fokionos Negri Street and Amerikis Square.
Beginning in the 1980s many residents of Kypseli moved to the northern suburbs and, later, immigrants started using the basements and the small apartments of the buildings as cheap residences.
Consequently, the value of real estate decreased even if high apartments on Fokionos Negri Street can be sold more expensively in comparison to the rest of the district. Several areas have remained commercial such as Patission and Fokionos Negri Streets