St. Mary’s Tower
St. Mary's Tower is a fortification on the island of Comino in the Malta archipelago. One can see it easily from the ferry that crosses from Malta to Gozo. It's a short 15 minute walk up the hill.
The tower is typically open to the public from April to October, every Wednesday, Friday , Saturday and Sunday, from 10:30am to 3:00pm. They usually keep to this schedule, so if you see a flag flying above the tower, that's a sure sign that it's open that day. The tower is also open most public holidays.