The clock itself is something to see. Built in 1410 it is the oldest working astronomical clock in the world. We all crowded around to experience the clock's movements when the hour was struck. Waiting patiently, eyes glued to the clock. At the hour, the skeleton on the clock pulled on his cord, apostles paraded around, various figures shook their heads 'no to death', the clock stood still as bells chimed. Fifteen second in all. for me, it was worth the wait. One of those things you have to experience when in Prague.