Kadaà  (; ) is a town in Chomutov District in the ÃÂstànad Labem Region of the Czech Republic. It has about 18,000 inhabitants. It lies on the banks of the Ohà Âe river. Kadaà  is a tourist centre with highlights being the Franciscan Monastery and the historical square with late Gothic Town Hall Tower. The historic town centre is well preserved and is protected as an urban monument reservation.
Kadaà  consists of ten municipal parts (in brackets population according to the 2021 census):
The name is most likely derived from the personal name Kadan, meaning "Kadan's (court)".
Kadaà  is located about southwest of Chomutov and northeast of Karlovy Vary. It lies on the border between the Most Basin and Doupov Mountains. The northern tip of the municipal territory extends into the Ore Mountains. The highest point is the hill Dubový vrch at above sea level, located on the southern border of the territory. A notable feature is also the ÃÂhoà ¡à ¥ hill, which is together with its surroundings protected as a national nature reserve.
Kadaà  is situated on the banks of the Ohà Âe river. On the Ohà Âe, there is Kadaà  Reservoir with an area of . It was completed in 1972. Its main purpose is to ensure a minimum flow under the reservoir, but it also serves for the energy use and for recreation and water sports.
In the Bronze Age, the plateau on the ÃÂhoà ¡à ¥ hill was inhabited, on which there was a Celtic hillfort. According to some theories, the Wogastisburg Castle stood here, which was the scene of the Battle of Wogastisburg between Franks and Slavs in 631.
The first written mention of Kadaà  is from 1183. it was probably founded as a market settlement during the colonization of the area at the turn of the 11th and 12th centuries. In 1186, Duke Frederick donated the settlement to the Knights Hospitaller. Around 1260, Kadaà  was promoted to a free royal town and the castle was built. An extensive fire in 1362 destroyed the town and the castle, but everything was restored and supplemented with better fortifications. However, King Charles IV granted it several municipal rights (a vineyard, and an annual market) that made it flourish again.
In 1421, during the Hussite Wars, the town was conquered by the Hussites, who controlled it until the end of the wars. From the mid-15th century, the town was pledged to various creditors of the royal chamber. The most notable of them was the Lobkowicz family, who held the town from 1469 to 1519. Jan Hasià ¡tejnský of Lobkowicz founded the Franciscan Monastery and the Church of the Fourteen Holy Helpers.
In 1534, "Kadaà  religious peace" was negotiated here between Württemberg Protestants and Emperor Ferdinand I for the Catholic side. After the Battle of White Mountain in 1620, violent re-Catholicization began in Kadaà Â. During the Thirty Years' War, in 1631, 1635 and 1648, Kadaà  suffered from fires and plundering by various armies. The Kadaà  Castle remained a ruin until the second half of the 18th century, when it was rebuilt into barracks by Empress Maria Theresa.
The last great fire damaged the town in 1811. After the Revolution of 1848, the town became a district centre. The institute of the district town lasted in Kadaà  for 110 years when it was affiliated with Chomutov District.
After Czechoslovakia was established in 1918 and Kadaà  became its part, most of the Sudeten German disagreed with this decision. On 4 March 1919, they demonstrated for self determination and joining Austria. The Czechoslovak military forces were sent in and tried to control the crowd by shooting. The result of the so-called Kadaà  massacre was at least 25 dead and dozens injured.
After the Munich Agreement in 1938, Kadaà  was annexed by Nazi Germany and administered as part of Reichsgau Sudetenland. The local Czechs were forced to move to central Czechoslovakia and the Jewish community was sent to concentration camps in Germany. The synagogue was burned down during the Kristallnacht of 9 November 1939. According to Beneà ¡ decrees, after World War II, the German population was expelled and the area was re-settled by Czechs.
Although Kadaà  is situated in an industrial part of the Czech Republic, there is no major industry within the town. Tourism and services play an important role in the town's economy. There are two large power plants in the outskirts of the town, Tuà ¡imice Power Station and Prunéà Âov Power Station. The largest employers based in the town are the Kadaà  Hospital, Hunter Douglas (a manufacturer of window coverings) and SD â Kolejová doprava (transporter of coal by rail).
Kadaà  is served by four train stations and stops, located on the Kadaà ÂâÂÂDÃÂÃÂÃÂn railway line.
The most popular annual cultural event in Kadaà  is CÃÂsaà Âský den ("Emperor's day"), which commemorates the arrival of Emperor Charles IV into the town in 1367 and 1374. The historically tuned festival is accompanied by a music and theatre program on stage, a show of crafts and period costumes, games for children and others.
Other annual events held in the town include:
There are churches and chapels of four Christian denominations: Roman Catholic Church, Czechoslovak Hussite Church, Evangelical Church of Czech Brethren and Eastern Orthodox Church.
Kadaà  is home to two secondary schools: Gymnasium Kadaà Â, and Secondary Industrial School of Construction and Business Academy.
The Gymnasium Kadaà  was established in 1803 with 99 students and continued under the control of the Piarists until 1823. The seat of the old gymnasium was a former Minorite monastery in a building which is now the seat of the Regional Archive. The institute of gymnasium was then reestablished in 1872 in a new building. The gymnasium was closed again in 1951 and the new Industrial School moved to the building. It is still there today. A new gymnasium was established in 1968 and has remained on the same premises since 1978.
There are four primary schools and a school for handicapped children, managed by the town.
The town is home to an ice hockey club SK Kadaà Â, which plays in the 1st Czech Republic Hockey League (2nd tier).
The Franciscan Monastery in Kadaà  with the Church of the Fourteen Holy Helpers was founded in the 15th century by Jan Hasià ¡tejnský of Lobkowicz, who is buried there. It is a national cultural monument with unique murals and rare cellar vault. It also includes gardens with a vineyard. Due to the uniqueness of world importance, an application was submitted for its inclusion in the list of UNESCO World Heritage Sites. The monastery complex is a centre of cultural events and also serves as a museum.
Kadaà  Castle is a core of the preserved town fortifications, which surrounds the entire historic centre of the town. It was an early Gothic castle founded around 1260, rebuilt into late Gothic and Renaissance styles in the 16th century. It contains an exposition about its history. Another part of the fortification is the barbican of the original à ½atec Gate, one of the four main town gates. It was built in 1458 and is one of the oldest defensive structures of its kind in Central Europe.
MÃÂrové Square and its surroundings form the historical centre. The town hall was built in the second half of the 14th century. After 1500, it was rebuilt in the late Gothic style. In the mid-18th century, Baroque modifications were made. The building still serves its original purpose and is one of the best preserved Gothic town halls in the Lands of the Bohemian Crown. Since 2024, it has been protected as a national cultural monument.
One of the most known landmarks and symbols of the town is the Town Hall Tower. It was built in the 16th century and is the highest building in the town with . It is open to the public as a lookout tower. The town square also include the Church of the Exaltation of the Holy Cross, the Holy Trinity column and a Baroque fountain, which is called à  likovský pond due to its size.
The Church of the Exaltation of the Holy Cross was founded in 1289. The originally Gothic church was rebuilt in the Baroque style in the second half of the 17th century. Its present appearance is the result of the reconstruction after the fire in 1811.
From the square leads the narrowest lane in the Czech Republic, Katova uliÃÂka (meaning 'hangman's alley'). At its narrowest point, it is only wide. It is about long.
Benjamin Constant set a part of his famous novel Adolphe (1816) in Kadaà Â, referring to it as Caden, petite ville de la Bohême.
Kadaà  is twinned with: