Connect with your spiritual side and mingle with worshippers at Madonna del Monte Sanctuary. Quietly reflect outside for a while or ask if you're allowed to join the next service.
You'll have sightseeing choices galore when visiting Marciana. Madonna del Monte Sanctuary is a good place to start here, but there are lots of other interesting attractions to enjoy. Cavoli Beach, Marina di Campo Beach, and Biodola Beach are not far from the house of prayer and will fill in your day nicely.