Monumental Clock of Pachuca, Monument in Pachuca, Mexico

The Monumental Clock of Pachuca is a clock tower on Plaza Independencia in Pachuca, rising through four stories and built with white Tezoantla quarry stone in neoclassical style. The tower reaches a height of around 40 meters (130 feet) and is organized through columns, cornices, and decorated balconies that give each level a clear architectural profile.

A wooden bandstand stood on the Plaza de las Diligencias until 1901, when the Banda de Rurales played there under Candelario Rivas. Local miners and municipal president Alfonso María Brito then proposed a concert tower to governor Francisco Valenzuela; the project was approved in 1904 but halted a year later for lack of funds. In 1907 the state resumed it as a centennial monument, and the design by architect Tomás Cordero was built by engineers Francisco Hernández and Luis Carreón, financed by the San Rafael, Santa Gertrudis, La Blanca and Santa Ana mining companies. It was inaugurated on 15 September 1910.

Four female figures positioned on the tower sides embody central events in Mexican history: Independence, Liberty, Constitution, and Reform. These sculptures give the structure symbolic meaning that visitors notice as they walk around the plaza.

The tower stands on Plaza Independencia in the historic centre, where inclined streets and narrow alleys surround it; the monument itself occupies only 167.44 m² of the 22,057.65 m² plaza, so it can be circled on foot. The four dials face the cardinal points, letting visitors read the time from any side. The clock machinery, made by the Dent firm in London, was installed by Tomás Zepeda.

The clock's machinery was bought in England by Jesús Zenil Martínez, Mexico's minister plenipotentiary to Austria-Hungary, from the London firm of Edward John Dent. It reached Pachuca years before the tower was finished and was stored first in the Capilla de la Asunción, then in Francisco Rule's house, until Tomás Zepeda installed it.