If you want a touristic walk without getting tired, you have the option to view the most important landmark of Cagliari in 45 minutes. Make a stop near the Cathedral where you can catch the next train to spend about an hour on the trip. Every day in summer it starts at 10, 11, 12, 16, 17 and 18h. In winter it is closed on Mondays. Free for children under 3 years old. For the rest it costs € 7.