"[...] for, to believe my grandmother, she made other women look no more than the big French fashion-doll that used to be shown on Ascension days in the Piazza."[1]
Piazza is an Italian word and refers to a public square or market square, especially in Italian towns.[2]
[1] Wharton 1901, p. 9
[2] see Hornby 2019, Nr. 8