An early Venetian Renaissance building (1496–99), designed by Mauro Codussi. It serves as a triumphal entrance to the Merceria, the long and ancient main street of the city that leads to the Rialto.
The great 24-hour clock is decorated in blue enamel and gold, and indicates the hours, the phases of the moon and the houses of the Zodiac. The clock is surmounted by The Two Moors, bronze sculptures which sound the hours upon a large bell.