Constructed in 1634, the Cathedral of Immaculate Conception was not blessed until 1715. The church building is not only a key place of worship, but it’s also believed to be home to the oldest clock in the Americas, crafted during the 10th century.

King Carlos III moved the clock to the church during the colonial period, as it was a remanent of the Arab occupation of  Spain. The clock is still running today, and visitors are able to venture into the bell tower with guides to get a closer view.