Urban renewal is the process of redeveloping areas of moderate to high density urban land use. It often involves relocating businesses and demolishing structures to redevelop land. While proponents see it as improving economic and living conditions, critics argue it can displace existing communities. Early examples include Haussmann's redesign of Paris in the 1850s and the redevelopment of Rome from 1925-1950. Urban renewal aims to revitalize city centers and gentrify neighborhoods but has also demolished some neighborhoods in the past.