This is a very well preserved ancient tower, do some research as there is not much info on site and you can only view it from the outside. However its worth a look.
It's not easy to find so prepare beforehand.
This tower has an ancient flavor being built in the 11 century as a residential tower. It is so close to the city center that a stroll in the old city can easily lead to it. It lost some of its height, but the remaining part is well retained. The interior is really nice.