St. Mark’s Clock Tower, or Torre dell’Orologio, rises above the archway connecting Piazza San Marco with the Merceria, Venice’s historic shopping street. Built at the end of the 15th century and usually attributed to Mauro Codussi, it is an early Renaissance landmark with a blue-and-gold astronomical clock showing the hours, lunar phases and signs of the zodiac.
The tower was designed to display Venice’s wealth and technical ambition as well as tell the time. Above the clock, a Madonna and Child sit beneath the winged Lion of St. Mark, while two bronze figures known as the Moors strike the bell at the top. On certain religious feast days, figures of an angel and the Three Kings emerge in procession from the tower. The clock remains a working piece of Venetian engineering, restored over the centuries.
You can admire the façade for free from St. Mark’s Square; a guided interior tour offers a closer look at the mechanism and views across the basilica’s domes and Venetian rooftops. Check availability and book ahead through the official Musei Civici di Venezia website, and be prepared for steep, narrow stairs. Visit the square early in the morning for a quieter look, or walk from Rialto along the Merceria to arrive beneath the tower’s arch.