If you're after a serene place to spend some time, head to Chiesa di San Francesco. This house of prayer offers a welcome respite from the constant comings and goings of life.
This house of prayer is in Iglesias Historic Centre, a place that has lots going for it! Sa Punta 'e S'Arena Beach, Masua Mine, and Santa Barbara Cave are other good sightseeing opportunities not far away when you're done at Chiesa di San Francesco.