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Prague Astronomical Clock

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Prague Astronomical Clock (Czech Republic)

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The Prague Astronomical Clock, known as the Orloj, is a medieval engineering marvel located on the southern wall of the Old Town Hall. Installed in 1410 by Mikuláš of Kadaň and Jan Šindel, it is the third-oldest astronomical clock in the world and the oldest one still in operation. The clock consists of three main elements: the astronomical dial, the calendar dial, and the famous hourly show of moving figures. Every hour, the figures of the Twelve Apostles appear in the windows above the clock, accompanied by the figure of Death tolling a bell. According to legend, the clockmaker Hanuš was blinded after completing the work to ensure he could never replicate such distinctive craftsmanship. Despite suffering damage during World War II, the clock was meticulously restored and continues to captivate visitors from across the globe. It stands as more than just a timepiece; it is a symbol of Prague's enduring history and the sophisticated fusion of medieval science and art. The Orloj remains the beating heart of the Old Town Square, representing centuries of craftsmanship.

Best time to visit & climate

The most pleasant time to visit is Jun–Aug.

JanFebMarAprMayJunJulAugSepOctNovDec
Avg °C-2-139141820201494-1
Rain mm423239366978798153464341

📋 Practical info

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Visiting
The Prague Astronomical Clock is a masterpiece of medieval technology on the south wall of the Old Town Hall. The dial is visible at all times from the square.
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Typical hours
The dial is always visible; the hourly show of figures occurs from 9:00 AM to 9:00 PM. The tower climb is typically open daily from 10:00 AM to 6:00 PM.
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Photography
Photograph the clock best from the street - a wide-angle lens helps capture the entire dial. Photography is allowed during the tower climb.
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Time needed
The hourly show lasts only about one minute. Allow about 15 minutes to view the clock, plus 30 minutes for the tower climb.
Combine with
Combine your visit with a walk through Old Town Square. Nearby are the Týn Church and the town hall tower.
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Getting there
The clock is in the center of Prague's Old Town, reachable by metro (Staroměstská station) or on foot. The square is pedestrianized, parking is scarce.
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Insider tip
Arrive about ten minutes before the hour to get a good spot. Avoid the main tourist rush in the late morning.

Geography

Coordinates
50.08700, 14.42070

Facts

  • Installed in 1410, making it over 600 years old.
  • The oldest astronomical clock in the world still in operation.
  • Features a mechanical show of the Twelve Apostles every hour.
  • Displays Babylonian time, Old Bohemian time, German time, and Sidereal time.
  • The calendar dial was added by Josef Mánes in 1865.
  • Severely damaged by fire during the Prague Uprising in May 1945.

Explore nearby

Notable places around

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Sights in the town Prague Astronomical Clock (10)

Astronomical Clock

Medieval astronomical clock on the Old Town Hall. Displays hours, moon phases, and zodiac signs.

🕒 Mo 11:00-22:00; Tu-Su 09:00-22:00

Old Town City Hall Tower

Gothic tower of the Old Town Hall. Provides views of Old Town Square and Prague.

🕒 Mo 11:00-22:00; Tu-Su 09:00-22:00

Old Town City Hall

Historic building on Old Town Square. Seat of city administration with famous astronomical clock.

🕒 Mo 11:00-22:00; Tu-Su 09:00-22:00

Mozart museum🏛 museum

Museum in a former monastery. Focuses on Wolfgang Amadeus Mozart's stays in Prague.

🕒 Mo-Su 09:00-20:00

Galerie art

Art gallery in Prague's Old Town. Hosts rotating exhibitions of contemporary artists.

Prague Meridian

Meridian marker on Old Town Square. Indicates Prague noon.

Sex Machines Museum🏛 museum

Museum of mechanical sex devices. Exhibition of historical and modern machines.

Banksy Museum

Gallery featuring works of anonymous street artist Banksy. Prints and installations.

Sklářské muzeum Moser🏛 museum

Museum of the Moser glassworks. Showcases fine glass design and craftsmanship.

Saint Nicholas

Baroque church on Old Town Square. Known for its frescoes and dome.

Sights nearby

Frequently asked questions

When do the apostles move?
The mechanical show takes place every hour on the hour from 9:00 to 21:00.
Does it cost money to see the clock?
Viewing the clock from the outside is free.
Where exactly is the clock located?
It is located on the southern wall of the Old Town Hall in Old Town Square.
How old is the Prague Astronomical Clock?
The clock was installed in 1410 and is the oldest of its kind still in operation.
Can you climb the Town Hall tower?
Yes, the tower is accessible and gives a panoramic view of Prague.
Prague Astronomical Clock: where is it located?
Prague Astronomical Clock is located in Czech Republic.
Prague Astronomical Clock: what is there to see?
Highlights include Astronomical Clock, Old Town City Hall Tower, Old Town City Hall.
Prague Astronomical Clock: when is the best time to visit?
The most pleasant time to visit is Jun, Aug.
Prague Astronomical Clock: why is it worth visiting?
The Prague Astronomical Clock, known as the Orloj, is a medieval engineering marvel located on the southern wall of the Old Town Hall.
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