Prague's Astronomical Clock is a 600-year-old marvel of medieval engineering. The Gothic clock tower is festooned with symbolism, and statues representing virtue and vice in human form. Every hour on the hour, the statues spring to life in a dramatic spectacle of religious and cultural significance, while a real-life trumpeter in full medieval regalia heralds the passing of another hour with a trumpet blast. Recent renovations on the clock tower have revealed hidden treasures left behind by sculptors, dating back as far as the 15th century!