Yvon and Cees Kloppenburg were on a back-to-back western Mediterranean cruises on board Ryndam. They chronicled their cruising experience for us on the blog.
Climbing a steep hill is the way to find the most historic sites of Cagliari. It is a climb of about a little more than half an hour to reach the Porta Christina. If you do not want to climb you can take a taxi or the tourist train from the main square, where you are treated to beautiful views of the city and historic buildings.