Kaštilac Central Dalmatia

At the centre of the Kaštel Gomilica waterfront is this square-shaped fortified island, linked to the mainland by a bridge. It was built for a community of Benedictine nuns and is now filled with private dwellings. Game of Thrones fans will recognise it as one of the locations used for the town of Braavos. The island is flanked by shallow, sandy beaches.