Urbanization is increasing as more people live in cities. Suburbanization is driving the expansion of residential areas outside cities, encouraged by population growth, preferences for larger homes with gardens, and improved public transportation. Regeneration initiatives put new life in urban areas by improving housing, amenities, and attracting jobs. Central business districts are the commercial hearts of cities, containing many shops, offices, and public buildings, surrounded by older structures, garages, workshops, and some housing, with transition zones mixing commercial and residential uses.