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Burg Karlstein / Karlštejn

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Karlštejn Castle

Karlštejn Castle sits high on a rocky hill in Czechia. A king built it long ago to keep his crown jewels safe!

Karlštejn Castle stands on a rocky hill above the Berounka River, about 20 kilometers from Prague in Czechia. Charles IV, King of Bohemia and Holy Roman Emperor, founded it in 1348 as a home and a safe place for royal treasures, including the imperial crown jewels. Its Great Tower is 60 meters high.

Karlštejn Castle was founded in 1348 by Charles IV, King of Bohemia and Holy Roman Emperor, as a private residence and a place to keep royal treasures, above all the Imperial Crown Jewels. Built in three levels up a rocky hill, it was completed in 1365 and rises to a 60-meter Great Tower. Rebuilt several times, it gained its present look in a restoration by the architect Josef Mocker at the end of the 19th century.

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Photo: Jürgen Regel, Marian…, CC BY 3.0, via Wikimedia Commons

Discover Karlštejn Castle

Karlštejn Castle is in Czechia, a country in the middle of Europe.

It sits on a rocky hill covered with trees. Its highest tower is called the Great Tower.

Karlštejn Castle towers on a rocky hill over the Berounka River, about 20 kilometers from Prague, the capital of Czechia.

Its buildings step up the hill, one above another. At the very top stands the Great Tower, 60 meters high, with thick walls around it. Today the castle belongs to the state, and visitors can tour it.

Charles University describes Karlštejn as one of the most important and best-known heritage sites in the country, towering on a rocky hill over the Berounka River some twenty kilometers from Prague.

The castle's own site says it has always belonged to the king or to a state institution, never to private owners, and is owned by the state today. Its buildings climb the hill in their original stepped arrangement, with the 60-meter Great Tower and its massive fortifications at the highest point.

Where
Karlštejn, near Prague, Czechia
Built
1348–1365
Founder
Charles IV, King of Bohemia and Holy Roman Emperor
Great Tower
60 m
Burg Karlstein / Karlštejn
Photo: Jürgen Regel, Marian…, CC BY 3.0, via Wikimedia Commons

A castle for the crown jewels

Long ago, in 1348, King Charles IV started building this castle.

He wanted a safe place for his crown jewels and other treasures.

Charles IV, King of Bohemia and Holy Roman Emperor, founded Karlštejn in 1348. He wanted it as his own home and as a safe place for royal treasures, especially the Imperial Crown Jewels.

Charles first stayed there in 1355 and watched over the building and decoration. The work was finished in 1365. The imperial crown jewels were kept there until 1420.

The castle was founded in 1348; Charles University notes that later tradition gives the date as 10 June, and that the foundation stone was laid on Charles's behalf by the Archbishop of Prague, Ernest of Pardubice. Charles first stayed there in 1355, overseeing the building and decoration, and the official site dates the completion to 1365.

The Imperial Crown Jewels were kept in a chapel in the Great Tower until 1420 and never returned. From 1436 to 1619 the castle kept the Bohemian crown jewels, and it guarded royal archives until the 17th century. It was a royal residence only under Charles IV and his son Wenceslas IV, until 1419.

Through the years

Three levels up the hill

The castle is built in steps up the hill. The lowest buildings are at the bottom, and the Great Tower is at the top.

The Great Tower is 60 meters tall!

The castle was built in three levels on different heights of the hill. The lowest level held homes and service rooms, including the Burgrave's House and the five-story Imperial Palace.

The Marian Tower stands on the second level. The highest level is the Great Tower, which held the treasures behind strong walls.

Charles University explains that the castle was built in three basic segments, at different heights and with different purposes. The lowest level holds residential and service areas, including the Burgrave's House, much altered in the 19th century, and the Imperial Palace; the second level has the Marian Tower; the highest level is the Great Tower, where the imperial jewels were stored.

The official site describes the preserved stepped arrangement: a small courtyard by the Well Tower and the Burgrave's House, then the five-story Imperial Palace and the Marian Tower, and at the top the Great Tower with its massive fortifications.

Rebuilt through the centuries

Over hundreds of years, builders fixed and changed the castle many times.

The castle you see today looks the way it was made about 130 years ago.

After 1480 the castle was rebuilt in the late Gothic style, and late in the 1500s in the Renaissance style. Its present look comes from a big restoration at the end of the 1800s, led by the architect Josef Mocker.

Inside, visitors can see a gallery of portraits of the kings of Bohemia, a copy of the royal Crown of Bohemia and a castle well.

The official site traces the changes: a late Gothic rebuilding after 1480, Renaissance work in the last quarter of the 16th century, and a purist reconstruction at the end of the 19th century that gave the castle its present appearance. Charles University dates the major reconstruction from 1887, with Josef Mocker in charge from 1892 to 1899; it says some changes did not follow the original form, but the work saved the decaying building.

The castle also shows the largest portrait gallery of the kings of Bohemia in Czechia, a replica of the royal Crown of Bohemia and a unique castle well.

Founded
1348
Imperial Palace
five stories
Last big restoration
1892–1899, Josef Mocker
Burg Karlstein / Karlštejn
Photo: Jürgen Regel, Marian…, CC BY 3.0, via Wikimedia Commons

A castle on a wooded hill

In this photo, the castle stands above green trees under a blue sky.

Look at its pointed gray roofs and its long walls!

This photo was taken on 27 July 2009. The tall, pale Great Tower with its steep gray roof stands on the left, and a long palace with a wooden upper story stretches to the right. Walls with notches along the top run below, above a wooded hill.

Karlštejn is also known as the setting of a comedy play, A Night at Karlštejn, by the Czech poet Jaroslav Vrchlický.

The photograph (27 July 2009, from Panoramio) looks up at the castle from below: the Great Tower on the left, a round corner tower and crenellated walls, and the long palace buildings with steep slate roofs and a timber-framed upper story on the right, above a wooded slope.

Charles University counts Karlštejn among the most popular tourist destinations in Czechia, visited by hundreds of thousands of people. The castle is also known as the setting of Jaroslav Vrchlický's comedy A Night at Karlštejn.

Burg Karlstein / Karlštejn
Photo: Jürgen Regel, Marian…, CC BY 3.0, via Wikimedia Commons

Amazing facts

  • This castle was built to keep a king's crown jewels safe!

    Charles IV founded Karlštejn as a home and a safe place for royal treasures, especially the Imperial Crown Jewels.

    Karlštejn was founded as Charles IV's private residence and a place for safekeeping royal treasures, especially the Imperial Crown Jewels.

  • Karlštejn has always belonged to a king or to the country, never to just one family!

    Over the centuries, the castle has always belonged to the king or a state institution, never to private owners.

    The castle has always been in the hands of the king or a state institution, never in private hands, and is owned by the state today.

  • There is a funny play about a night at this castle!

    The castle is the setting of a comedy play, A Night at Karlštejn, by the Czech poet Jaroslav Vrchlický.

    Karlštejn is famous as the setting of Jaroslav Vrchlický's comedy A Night at Karlštejn.

Words to know

castle
a large, strong building with thick walls, built long ago for rulers and defense
crown jewels
the crown and other precious objects used by a king or queen
emperor
a ruler of an empire, a group of many lands
battlements
a wall along the top of a castle with gaps, so it looks notched
Gothic
a style of building from the Middle Ages, with pointed arches and tall shapes
restoration
work to repair an old building and bring back how it looked

Discovery challenge

  1. Who started building Karlštejn Castle?

    Which king and emperor founded Karlštejn Castle in 1348?

    Which King of Bohemia and Holy Roman Emperor founded Karlštejn as his residence and treasury?

    • Charles IV
    • Henry VIII
    • Louis XIV
    Show the answer

    Charles IV

    King Charles IV!

    Charles IV.

    Charles IV.

  2. What did the king keep safe in the castle?

    Which royal treasures was Karlštejn built to keep safe?

    Which imperial treasures were kept in the Great Tower until 1420?

    • Crown jewels
    • Books of maps
    • Horses
    Show the answer

    Crown jewels

    His crown jewels!

    The Imperial Crown Jewels.

    The Imperial Crown Jewels.

  3. How tall is the Great Tower?

    How high is the Great Tower at the top of the castle?

    What height does the castle's own site give for the Great Tower?

    • 60 meters
    • 6 meters
    • 600 meters
    Show the answer

    60 meters

    60 meters!

    60 meters.

    60 meters.

  4. In which country is Karlštejn Castle?

    Karlštejn Castle is about 20 kilometers from the capital of which country?

    Karlštejn stands above the Berounka River in which country?

    • Czechia
    • France
    • Portugal
    Show the answer

    Czechia

    Czechia!

    Czechia (its capital is Prague).

    Czechia.

  5. In which year did the castle's building start?

    In which year was Karlštejn Castle founded?

    In which year does the official history date the founding of Karlštejn?

    • 1348
    • 1648
    • 1948
    Show the answer

    1348

    1348!

    1348.

    1348.

Nearby places

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For parents & teachers

What children will learn

  • Explain why rulers built strong castles to keep treasures safe.
  • Describe how Karlštejn's buildings are arranged in levels up a hill.
  • Explain what restorers do, and why a restoration can change how a building looks.

Recommended ages: 4 to 17 · About 15 minutes

Talk about it

  • Why might a king keep his crown jewels in a castle outside the capital?
  • The 19th-century restoration saved the castle but changed some parts. Was that a good choice?
  • If you built a treasure castle, where would you put the treasure, and why?

Try at home or in class

  • Build a castle in three levels on a pile of books, with the tallest tower at the top.
  • Find Prague and the castle of Karlštejn on a map of Czechia.

Key vocabulary: castle, crown jewels, emperor, battlements, Gothic, restoration

Where these facts come from

  1. Wikidata , Wikimedia Foundation (CC0 1.0)
  2. History of Karlštejn Castle , Karlštejn Castle (National Heritage Institute)
  3. Karlštejn Castle , Charles University, Charles IV 700th anniversary
  4. File:Burg Karlstein - Karlštejn - panoramio.jpg , Wikimedia Commons
  5. Wikimedia Commons , Wikimedia Foundation (Per file (public domain, CC0, CC BY or CC BY-SA); see each media record)

Checked, not yet human-reviewed. Last updated November 1, 2026. Spotted a mistake? Tell us.

Picture credits
  • Photo: Jürgen Regel, Marian…, CC BY 3.0, via Wikimedia Commons · source · license