We have now been up the Guinigi Tower three times and never tire of the awesome sights from the top. It is amazing to be able to stand under olive trees on top of a medieval building while taking in views of an ancient Tuscan city. Once on top of the tower though, although you can wander around the perimeter to enjoy the views, there is little overtaking room available. Be warned that not all people (and dare I comment, not all nationalities) share the same levels of patience and politeness when trying to negotiate the available space. Today my camera was almost knocked over the edge of the tower by a fat woman who obviously needs to learn the art of patience and some crowd presence manners. The tower really needs to introduce a time restriction / visitor slot system (just like at the Leaning Tower of Pisa) to ensure that only a limited number of people are allowed up the tower in a given time slot; for example, 25 people every 15 minutes. This would then ensure that everybody gets to enjoy the views without the unpleasant pushing and shoving that can sometimes happen at the top of the tower. Overall, even allowing for this detractor, the Guinigi tower is a 'must see' for any visitor to Lucca.