Astronomical Clock Orloj

A medieval astronomical clock installed in 1410 on the southern wall of the Old Town Hall (Staroměstská radnice) — the third oldest astronomical clock in the world and the oldest one still in operation. The clock displays the time, the positions of the Sun and Moon, zodiac signs, and a calendar. Every full hour between 9am and 11pm, the 'Walk of the Apostles' is set in motion — 12 figures of apostles pass through the windows above the clock face. Below, a figure of Death rotates with an hourglass. Best visited just before the full hour to find a spot in the crowd.