Palazzo Mezzanotte, also known as Palazzo delle Borse ("Stock Exchange Palace") is a 20th-century building of Milan, and the seat of the Italian stock exchange. It is located in Piazza Affari, the city square after which the Italian stock exchange itself is nicknamed. The name "Palazzo Mezzanotte" is a reference to Paolo Mezzanotte, the architect who designed the building. The original stock exchange of Milan was established in 1808 in the seat of the Mount of piety of the city. The following year it was moved to the Palazzo dei Giureconsulti, in Piazza Mercanti, and at the beginning of the 20th century it was relocated again in a newly constructed building in Piazza Cordusio.