Completed in 1897 as Chicago’s first central public library, the building was designed to impress and to prove that Chicago had grown into a sophisticated metropolis. The country’s top architects and craftsmen used the most sumptuous materials, such as rare imported marbles, polished brass, fine hardwoods, and mosaics of Favrile glass, mother-of-pearl and colored stone, to create an architectural showplace. Located on the south side of the building, the world’s largest stained glass Tiffany dome ― 38 feet in diameter with some 30,000 pieces of glass ― was restored to its original splendor in 2008. On the north side of the building is a 40-foot-diameter dome with some 50,000 pieces of glass in an intricate Renaissance pattern, designed by Healy & Millet.