Astronomical Clock of Prague
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The Prague Astronomical Clock, known as the Orloj, is a medieval masterpiece located on the southern wall of Old Town Hall in Prague. Installed in 1410, it is one of the oldest functioning astronomical clocks in the world. The clock features an intricate astronomical dial that displays the positions of the Sun, Moon, and zodiac constellations. It also shows local time, sidereal time, and Old Czech time, which is counted from dawn. The clock's mechanism is complex, with multiple gears and dials that provide detailed astronomical information. The Orloj is not only a timekeeping device but also a theatrical experience. Every hour from 9 AM to 11 PM, it comes alive with moving figures, including the 12 Apostles and a golden rooster. Four allegorical figures—Death, Greed, Lust, and Vanity—adorn the sides, symbolizing human vices. Below the main dial is a calendar dial showing the current date and month. The clock's significance extends beyond its technical prowess, as it has become a cultural icon and a symbol of Prague's rich history and craftsmanship.
