Osečná (; ) is a town in Liberec District in the Liberec Region of the Czech Republic. It has about 1,200 inhabitants. Lázně Kundratice, a part of Osečná, is known as a spa village. Administrative parts Villages of Chrastná, Druzcov, Kotel, Lázně Kundratice, Vlachové and Zábrdí are administrative parts of Osečná. Etymology The name of the town is derived from the word osekávat ("truncate"), which is an activity that people had to do before they could build the town – to truncate the forest. Geography Osečná is located about southwest of Liberec. It lies in the Ralsko Uplands. The highest point is at above sea level. The town is situated on the Ploučnice River, which springs here. Chrastenský Waterfall is located on the river west of the town. There are several ponds around the town. Half of the Čertova zeď ("Devil's wall") National Nature Monument is situated in the municipal territory. It is the remains of a basalt vein from the Tertiary. According to legend, the devil built it. History Osečná was most likely founded in the first half of the 13th century, along the trade route which led from the town of Český Dub to Děvín Castle. The founders of Osečná was probably the Wartenberg noble family. In 1234, Osečná area became property of King Ottokar II, then after his death, his son, Wenceslaus II, inherited his property. In 1306, Osečná returned to the Wartenbergs. The first written mention of a wooden church in Osečná is from 1350 and the first written mention of the settlement is from 1352. 16th–18th centuries In 1516, the Bieberstein family bought Osečná and Děvín Castle. On 8 April 1565, Charles the Bieberstein laid the foundation stone for the construction of a new stone church. Construction took three years. In 1548, the town chronicle was developed. At the end of the 16th century, Charles Bieberstein sold Osečná and other villages to Jan Oppersdorf. The year 1576 was very important, when Emperor Rudolf II promoted Osečná to a town and it got the law to use an urban character and the seal. The griffin with the golden crown and with the golden armor on the red background is on the Osečná's urban character. On the bottom there was a phrase, "Sigillum oppidum ossensis 1576". Osečná had the right to brew beer too and could perform executions until 1769. The executions were held on the hill,