The Astronomical Clock of Prague Has a Secret Story

Prague’s Astronomical Clock (Orloj), blends in history, mechanics, legends, and many secrets. Do you know about them? Every day, thousands of people gather to see the clock at different time of the day because there is something mystical and attractive about it. More than that, it is one of the most prominent landmarks of the city that is one of my favorite in Europe. Everyone knows the clock chimes, but few know that there are hidden meanings in its design. One must look at it carefully to realize that the zodiac signs, Gothic statues, and golden rooster all carry allegories about time, vanity, and death. One gets to know better when you have a guide along or you have read about it before-hand.

It’s not just a clock—some also see it as a medieval masterpiece that doubles as a lesson in philosophy, faith, and the fleeting nature of life.

Where is the Astronomical clock located? It proudly stands on the southern wall of Prague’s Old Town Hall in the Old Town Square (Staroměstské náměstí). It was first installed in 1410. The figures of the Apostles were actually added later, in the 17th century. Do you know that it is the third-oldest astronomical clock in the world and the oldest still in operation? It still runs largely on the original medieval mechanism. Thus, travellers beeline in front of it to see the enigma of its artistry. At first glance, it looks like a beautiful, oversized timepiece, but when you watch it closely, it holds your attention.

Designed by clockmaker Mikuláš of Kadaň and astronomer Jan Šindel, who was a professor at Charles University, the clock has stood through many centuries. It has survived wars, fires, and centuries of repairs. It was damaged in the year 1945 in the WWII but it stands resilient and strong. The Astronomical Clock is not just a magnificent piece of engineering work but also Prague’s pride-  ticking for over 600 years. In my view, it is not just a tourist attraction but a symbol of exemplary engineering and unforgettable craftsmanship.

The Symbolisms to Notice in the Astronomical Clock

The Astronomical Dial (the big blue and gold circle) shows Central European Time, Old Bohemian Time, and Babylonian Time. It not only tracks the Sun’s position in the zodiac but it also shows the phases of the Moon. The golden sun moves along the zodiac ring, showing both the time of day and its position in the heavens, while the moon tracks its phases with astonishing precision. The colored background itself is symbolic: blue for the sky above, black for the night, and brown for the edge of the earth at dawn and dusk.

Every hour, two small windows open at the top of the clock, and the twelve Apostles appear in solemn procession, each one briefly visible as they raise their hands to bless the city. At the same moment, four animated figures below act out a symbolic drama that reflects the frailties of human nature. The skeleton, representing Death, tolls his bell to remind onlookers that life is finite and inescapable. Beside him, Vanity studies his reflection in a mirror, Greed clutches a heavy purse, and a Turk strums a mandolin, embodying temptation and worldly pleasures. Finally, a golden rooster crows to close the spectacle, a symbol of awakening and renewal. For medieval citizens, this performance was never mere entertainment—it was a sermon in stone, a daily reminder of mortality, morality, and faith. Even today, when seen in its entirety, the Astronomical Clock remains a profound reflection on the human condition. This parade of the apostles was a later addition. It was added in the 17th century—200 years after the clock’s creation—to attract crowds and emphasize faith.

Some Secrets and Folklore

The locals often share the folkore in a hushed tone. Historians debate it with full force. Some like to believe in the story that the clockmaker, Master Hanuš, was blinded by the Prague council to prevent him from building another masterpiece elsewhere. In revenge, he supposedly sabotaged the mechanism—and cursed that the Prague city would suffer if the clock ever stopped.

I would just like to say that during both my trips to Czech Republic, I have not missed an opportunity to see this beauty of the Medieval period. It is absolutely heartening to see Orloj still function as a complex system of gears, weights, and counterweights. Are you ready to explore the wonders of the Czech Republic?

PRO TIP– Old Town is a great place to explore. Do venture inside the tower, or take an elevator to take a quicker way to the top. The views from the top are breathtaking. Photographers will love the panoramic views. Exploring the rest of the Old Town Hall, you will love to see historical halls and even a chapel. The rich history that one sees around is palpable.