Empoli is a small town and as such its main draw is the Piazza della Vittoria with the famous statue and many cafes. If the small-town vibe isn't doing much for you, then jump on a short bus ride to Florence. One of the most famous and beautiful towns in the whole of Italy, maybe even in the whole of Europe. As such, you can spend a lot of days just wandering its streets, drinking in the history and marvelling at the sights.