How venetian wells underground tanks work?

Venetian wells, or "pozzi," are underground water storage tanks that collect and store rainwater. These tanks are typically built from brick or stone and are designed to capture and filter rainwater through a series of channels and pipes. The stored water is accessed through a well or pump, providing a reliable water source for the city. The system helps manage water resources efficiently, especially in an area prone to flooding and with limited freshwater sources.