Traditional stone mansions, narrow cobblestoned streets, secluded squares and above all the banning of cars and the use of around 500 donkeys as means of public transportation, explain the reason why Hydra preserved its distinctive atmosphere through the passage of time. The island experienced exceptional economic growth in the past thanks to its great naval and commercial activity. The Hydriots contributed significantly also to the 1821 War of Independence as their powerful fleet participated in crucial sea battles.