Υδρα is a picturesque island in the Saronic Gulf of Greece, known for its well-preserved architecture and charming harbor. The island is car-free, making it a peaceful destination where visitors can explore its narrow cobblestone streets on foot or by using donkeys, which are a traditional mode of transport. The town of Υδρα features beautiful stone mansions, many of which date back to the 18th century, showcasing the island's rich maritime history. The island is also famous for its vibrant arts scene, attracting artists and writers who seek inspiration from its stunning landscapes and serene atmosphere.