//
Spot the belltower to find it, with a small "Ecclesiastical Museum of Hydra" sign pointing the way inside. Opening hours for the interior and the museum are rather more erratic than stated, but the courtyard is always open and worth a peep. The cathedral's interior is gorgeous, with hundreds of gold and silver icons and other elaborate Orthodox decoration. There's also a small museum on the second floor, which displays a variety of historical religious objects, textiles, bejeweled vestments, and other treasures. Entry to the museum costs about €4.