A new book, “Entryways of Milan,” celebrates 144 entryways all over the city. 

Some embody truly historical design partnerships, from Aldo Andreani’s Palazzo Sola-Busca (1924-1930) marked by the grotesque Symbolist sculptures by Adolfo Wildt, to a 1950s limestone corridor by Gaetano Brusa embedded with the ceramicist Pietro Melandri’s dramatic bas-reliefs. Designed in the late 1930s, Piero Portaluppi’s own Casa Portaluppi features too, its stairs and walls lined with jade-colored Verde Malachite.