If you're an art aficionado, you might end up spending an entire day at the Duomo.
You may have seen a great deal already, but this cathedral is one of the most impressive sights around. Observing the details both inside and out can take many hours. The site is an authentic museum for any art fan. Inside, many important works of art and monuments are housed. Its façade has undergone five hundred years of construction, since it began in the fourteenth century until Napoleon completed it in the nineteenth. However, the finishing touches are still being added today. Depending on how much of an art buff you are, a visit here could take a whole day. But don't forget to take the time to climb to the roof. From up above, on one side you can admire the incredible architectural details and on the other, take in unparalleled views of the city.