The astronomical dial
The upper dial is the part worth slowing down for, even if you cannot read it at first glance. It shows more than simple clock time: sun and moon positions, zodiac movement, Old Czech time, Central European time, Babylonian time, and sidereal time all overlap in one dense blue-and-gold face.
The Walk of the Apostles
Every hour from morning to late evening, the windows open and the apostles pass by in miniature procession. It is brief, almost cheekily brief, which is why the square reacts so strongly: everyone leans in, the figures move, the cockerel appears, and then the whole crowd exhales.
The calendar dial
Below the astronomical dial, the calendar links the machine to ordinary life: days, months, zodiac signs, and painted seasonal labor. The 1865 original by Josef Mánes is protected in the city museum; the version you see on the facade is a careful 1946 copy.
The digital clock model
Inside the Knight's Hall, the digital 3D model gives you a calmer way to understand the mechanism after the square-side spectacle. It is especially useful for curious visitors and families, because gears and rings make more sense when you can see the hidden logic instead of guessing from the crowd.