Giovanni Battista di Quadro (PolishJan Baptysta Quadro, LatinJoannes Baptista Quadro) (died between 10 April 1590 and 16 January 1591) was an Italian renaissance architect, one of the most famous architects in Central Europe in his era.
Until 1550, he probably worked in Saxony and Silesia, but on 13 March 1550, he signed a contract with the city council of Poznań for rebuilding the town hall. In 1551, with the agreement of the council, he went to Płock as a consultant on the renovation of the cathedral. In the same year, his name was mentioned in the court books of Poznań because of links between him and the Bishop of PoznańBenedykt Izdebski relating to building the bishop's palace in Krobia. From 1552 to 1562, di Quadro was the City Architect of Poznań, but the City Council also paid him in 1563, 1566, 1567, and 1570 for minor works. During these years, he worked for the citizens of Poznań and the clergy and nobles of Greater Poland.
Building of Scale in Poznań (renaissance rebuild in 1563 and renovation in 1573. In 1890 Scale was demolished, but after World War II it was rebuilt on di Quadro's original plans.)
Disappeared
private houses in Poznań
Stary Rynek 84 (after 1554)
Ślusarska Str. (1559)
Stary Rynek 39 (1561)
Stary Rynek 81 (1563)
Stary Rynek 52 (before 1579)
Plac Kolegiacki (since 1568, not finished. Renovated, probably based on his project in years 1958-1960)