Klášterec nad Ohří is a town in the Ústí nad Labem Region of the Czech Republic. The town of Klášterec nad Ohří is located on the left-bank of the River Ohre on the boundary of the Krušné and Doupovské Mountains, 330 metres above sea level. Parts of the town are affiliated villages Miřetice (now the modern part of the town with a lot of prefabricated houses), Ciboušov, Klášterecká Jeseň, Lestkov, Mikulovice, Rašovice, Šumná, Vernéřov, Hradiště, Kunov, Horní Miřetice, Pavlov, Potočná, Suchý Důl, Útočiště, and Velká Lesná.
The town was established by Benedictines from Postoloprty in the 12th century. They built a monastery there, which was destroyed in the 13th century. The village kept the name of Klösterle, i.e. little Kloster in German, and klášter in Czech. In the years to come after the foundation of the second porcelain manufacture 1794 Klášterec nad Ohří has grown in importance and become more and more famous in the whole region. In the town there is still a porcelain production until today under the trade market name THUN 1794 a.s..
The all-year-round opened neo-Gothic castle on the bank of the Eger River is the main landmark of the town. It is surrounded by a large English park, which includes a number of objects of interest. You will see a Baroque folly Sala Terrena, statues by Jan Brokoff or Sedm bolestí Panny Marie (Seven Pains of the Virgin Mary) – a complex of alcoved Baroque chapels from 1691. In the castle park, there is a large number of Central European woody plants and exotic rarities, such as Ginkgo Biloba called the Tree of Happiness.