You may have heard about the various cultures that have ruled Sicily over the centuries, right? When you look at the Palermo Cathedral, you can see the evidence of each one of them in the crazy assortment of architectural styles on the building.
The Palermo Cathedral (officially called Santa Maria Assunta, and sometimes known simply as the Duomo) dates from the late 12th century, built on the site of a temple dating from Ancient Rome. As later conquerors took over from the original Norman builders, they imprinted their own styles on the still-growing building. The exterior includes examples of Norman, Byzantine, Renaissance, and Baroque architectural elements, and they seem to be slapped on top of one another rather than incorporated as parts of a whole. In other words, the cathedral has a somewhat strange patchwork appearance that makes it look like the designers couldn’t make up their minds.