Cathedral of Hydra
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 â¬4.
Hydra Museum
Small but reasonably well-presented museum on the seafaring ways of the Hydriots and their disproportionate contributions to Greece's many wars. Notable exhibits include the embalmed heart of Admiral Andreas Miaoulis and the sad story of patriot Kouroulis Michalis who, we are informed, "died of sorrow caused by the renewed enslavement of his homeland" in 1832.
Some old Hydriote mansions have been restored as museums illustrating the traditional life of Hydra's splendid past; they are usually listed on island maps available locally.