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Klementinum

Historic sites ·Prague ·Closed
4.525.1K
#1Historic sites in the Czech Republic#1Historic sites in Prague
  • Visit: 45 min
  • from CZK 380
  • Not step-free
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About

Klementinum is a historic complex in Prague’s Old Town and home to the National Library of the Czech Republic.

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Why go

  • The 52-metre-high viewing balcony, reached by climbing 172 steps, looks over Prague’s centre.
  • Two original mural quadrants in Meridian Hall were used to measure star positions.
  • The Baroque Library hall has frescoes depicting science and art, theological books and historic globes.

Opening hours

Today10:00 – 18:30Show all
Monday10:00 – 18:30
Tuesday10:00 – 18:30
Wednesday10:00 – 18:30
Thursday10:00 – 18:30
Friday10:00 – 18:30
Saturday10:00 – 18:30
Sunday10:00 – 18:30

Don't miss

  • Atlas figureA figure carrying a starry sky stands atop the Astronomical Tower.Atop the Astronomical Tower
  • Student statueA statue in the first courtyard commemorates the events of 1648.First courtyard1648

Know before you go

  • Open daily from 10:00 to 18:30.
  • The Baroque Library can be viewed on the guided tour but visitors cannot enter the hall.

Tips for your visit

  • The guided tour lasts about 45 minutes and includes the Baroque Library, Meridian Hall and Astronomical Tower.
  • The tour climbs 172 steps to the tower’s viewing balcony; it is not barrier-free and has no lift.

Interesting facts4

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  1. The complex covers about two hectares and is Prague’s second-largest building complex after Prague Castle.

    Clementinum - Wikipedia
  2. 27,000 volumes

    The library holds 27,000 volumes, mainly in theology.

    Clementinum Astronomical Tower and Baroque Library | Prague City Tourism

  3. The complex holds Mozartiana, material on Tycho Brahe and Comenius, and historic Czech literature.

    Clementinum - Wikipedia

  4. The Clementinum lends its name to asteroid (3386) Klementinum.

    Clementinum - Wikipedia

Shorts

History

A chapel stood here by the 11th century, followed by a Dominican monastery. The Jesuits began their first Prague college on the former monastery grounds in 1556; the library of Charles University arrived in 1622, and the institutions merged in 1654. The site later became dedicated to library activities.

  1. 11th centuryA chapel dedicated to Saint Clement stood on the site.
  2. 1227Dominican friars established a monastery here.
  3. 1420The monastery was badly damaged during the Hussite Wars.
  4. 1556The Jesuits began a college here, Prague’s first Jesuit college.
  5. 1622The Jesuits moved Charles University’s library to the site.
Show all
  1. 1654The college and university merged under Jesuit leadership.
  2. 1653–1726The complex took shape in its current Baroque form.
  3. 1727František Maxmilian Kaňka’s university library was added.
  4. 1773After the Jesuits left, the complex became a secular university.
  5. 1775Daily weather observations began at the observatory.
  6. 1781The National Library was founded here.
  7. 1791The complex hosted the first World’s Fair, an industrial exhibition for Leopold II’s coronation as king of Bohemia.
  8. 1837The Mozarteum opened as a Mozart memorial.
  9. 1930Library activities became the only activities remaining at the site.

How to get there

  • On footThe complex stands in Prague’s Old Town, on the site of a former Dominican monastery.

Sources: Clementinum - Wikipedia · Clementinum Astronomical Tower and Baroque Libr… · Klementinum - Wikipedia · Clementinum - Wikipedia · Clementinum - Wikipedia · checked 28 Oct 2026

Where
Marianske namesti 5, Prague

Plan from here: A day out →

Questions and answers

How long does a Klementinum tour take?

About 45 minutes.

What are Klementinum’s opening hours?

Open daily from 10:00 to 18:30.

What can I see on a Klementinum tour?

The guided tour includes the Baroque Library, Meridian Hall and Astronomical Tower. Visitors view the Baroque Library but cannot enter the hall.

Is the Klementinum tour accessible to wheelchair users?

The tour is not barrier-free and has no lift.

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