Park Hill Flats in Sheffield, UK, is an iconic example of brutalist architecture, designed by architects Jack Lynn and Ivor Smith in the 1950s. The estate, completed in 1961, was a bold experiment in urban planning, featuring a unique “streets in the sky” concept. The structure comprises large concrete blocks, forming long, interconnected walkways that create an elevated street network, providing residents with communal outdoor spaces and fostering a sense of community. The buildings’ distinctive facade, adorned with vibrant, multi-colored panels, once symbolized a progressive vision of social housing. While the estate faced challenges over the years, including periods of neglect, it has undergone significant restoration and revitalization efforts to preserve its architectural significance and historical value. Park Hill Flats remains an important cultural landmark and a testament to the aspirations of post-war British architecture.