Twelve centuries have adorned the Czech Republic's capital city with a labyrinth of old streets, and wonderful old streets and bridges. Fascinating sites include the Old Town Square and City Hall, set among antique houses and arcades. Other sites include the Astronomical Clock, Powder Tower, and the Prague Ghetto, which includes the Jewish Cemetery. Also saw the Charles Bridge over the Vitava river, nearby the Hradcany area which contains the Castle of the Bohemian Kings.