Visually, it's quite striking and in a stunning location, surrounded by the old church, baptistry, etc.
We were traveling with kids - ages 5 and 8 - so weren't able to go climb up as it's only for age 8 and above. But they marvelled at the spectacle of this building so very clearly leaning!!
Got the requisite holding / pushing it up pics and some gelato on a very hot, sunny day. Didn't need to stay long, and headed further afield.