Prague Astronomical Clock Guide: History, Legend & Visitor Tips

Every visitor to Prague eventually ends up in the same spot. You're standing in Old Town Square, phone in hand, waiting for the world's oldest working astronomical clock to perform its famous hourly show. Yet most people watching have no idea about the clock's darker legend, or what its moving figures are actually meant to symbolize.

A Clock Surrounded by Legend

The Prague Astronomical Clock (Orloj) was installed on the Old Town Hall tower in 1410 by clockmaker Mikuláš of Kadaň and astronomer Jan Šindel. Around 1490, the mechanism was improved by a master clockmaker known as Hanuš.

According to a popular legend, Prague's city councillors were so impressed by Hanuš's work that they feared he might build an even greater clock for another city. To make sure that never happened, they allegedly had him blinded.

Seeking revenge, Hanuš asked his apprentice to lead him back to the clock one final time. He then sabotaged its intricate mechanism, and according to the story it stood still for years until another clockmaker finally managed to repair it.

Whether the story is true or not, the legend has been part of the Orloj's identity for centuries, adding an air of mystery to an already remarkable landmark.

The Hourly Show: What the Figures Symbolize

Every hour from 9:00 to 23:00, the clock comes to life as a group of mechanical figures performs the same symbolic scene that has captivated visitors for centuries.

• Vanity admires itself in a mirror.
• Greed clutches a bag of gold.
• A musician figure represents earthly pleasure, luxury, and temptation in medieval symbolism.
• Death, portrayed as a skeleton, rings a bell while turning an hourglass, reminding the others that time eventually catches everyone. The remaining figures shake their heads in refusal, symbolizing humanity's reluctance to accept mortality.

Two small windows above the clock face then open, revealing the Twelve Apostles, who slowly pass by and look down on the crowd below. The performance ends with the crowing of a golden rooster, followed by the bell striking the hour.

Below the astronomical dial sits the calendar dial, flanked by four stationary figures: a Philosopher, an Archangel, an Astronomer, and a Chronicler. They are commonly interpreted as representing wisdom, divine protection, science, and history. Unlike the animated figures above, they remain motionless, a quiet reminder that knowledge and reason do not need spectacle to endure.

A Masterpiece of Medieval Engineering

Beyond its legends, the Orloj is an extraordinary achievement of medieval engineering. Its astronomical dial shows the positions of the Sun and Moon, the current zodiac sign, Old Czech time, Babylonian time, and several other astronomical details, all driven by a mechanism whose core still dates back to the early 15th century.

More than six centuries after its installation, the clock is still running, making it one of Prague's most remarkable historical treasures.

If you'd like to enjoy the performance without standing behind a forest of raised smartphones, come for the first show at 9:00 or visit on a weekday. The square gets especially crowded around midday and throughout the weekend.

Stay Connected While Exploring Prague

Old Town Square is one of Europe's most photographed places. Between taking photos, using maps, translating information boards, and checking opening hours, it's surprisingly easy to drain both your phone's battery and your mobile data.

Staying connected from the moment you arrive makes navigating the city, translating signs, and sharing your trip much easier. With a Maxesimo Czechia eSIM installed before you leave, you'll be online as soon as you land, without swapping SIM cards or worrying about expensive roaming charges. If Prague is only one stop on a longer trip, the Maxesimo Europe eSIM covers 35 countries with a single plan.

❤️ Thanks for Reading

The Orloj has been keeping time over Old Town Square for more than six centuries, and it's easy to see why it still stops travelers in their tracks. Take a moment to enjoy the show, and enjoy the rest of your time in Prague.

Safe travels,
The Maxesimo Team