sentences:  For Sosnowiec's 100th birthday, the downtown area was thoroughly rebuilt, to harmonise its architectural layout and give the city a more modern image.In 2004 Sosnowiec authorities and designers were awarded the Grand Prix for the rebuilding of the downtown area in a competition for the best public space in the "Śląskie" Provinces.This investment had been accompanied by a program designed to improve the esthetic qualities of the city, under which a comprehensive program for unifying the colors of the elevations, and advertisements entitled “rainbow city” were introduced.