Żoliborz is one of the northern districts of the city of Warsaw. It is located directly to the north of the City Centre, on the left bank of the Vistula river. It has approximately 50,000 inhabitants and is one of the smallest boroughs of Warsaw. Despite its small size, the district has many green areas and mostly consists of low-rise architecture. Historically an upscale neighborhood and home to Warsaw's intelligentsia prior to World War II, Żoliborz is the second most expensive residential district in Warsaw after Śródmieście.