This handsome, free-standing building on the Town Square played an important role in the trade that powered Poznań’s economy. Essentially a medieval weigh station, it was here that city authorities ensured that trade was conducted fairly. Merchants were required to have their goods weighed and measured here before taking them to market. Sales tax and other duties were also collected, filling the city’s coffers.

Originally constructed in 1534, di Quadro gave it a revamp in 1561. What little remains of the original furnishings are now located in the Town Hall Museum, and the building itself is used by the city’s civil registry to issue marriage certificates.