old wooden church in late Gothic and Renaissance styles in 1565–1568. The town hall dates from 1704, and the Marian column in the middle of the town square was built in 1720–1730. A valuable sculpture group is the Statue of the Three Saints (John, Paul and Lutgardis). It dates from 1714. The former Šibeničák hill is now informally called Schillerova výšina ("Schiller's Height"), and the monument of Friedrich Schiller is located there. In Kotel there are protected lime trees. The biggest one, called the Millennial Limne Tree, is with height of and the trunk circuit of the most massive tree in north Bohemia. Twin towns – sister cities Osečná is twinned with: Krotoszyce, Poland Markersdorf, Germany References External links Cities and towns in the Czech Republic Populated places in Liberec District Spa towns in the Czech Republic