Stelmuže is a village in Zarasai district municipality of Lithuania. There is a wooden chapel built in 1650 not using saws or iron nails; it is the oldest wooden religious building in Lithuania. Stelmuže is also known for the Tower of Slaves (Lithuanian: Vergu bokštas), a rectangular building constructed of stone and bricks in the 18th century, used for imprisonment of serfs.
Stelmuže Oak (Lithuanian: Stelmužes ažuolas) is an English (Pedunculate) oak tree which is growing in the former Stelmuže Manor park. It measures as much as 3.5 m in diameter and 13 m girth in its widest part; respectively 2.8 m. and 9.58 m at the waist level. The oak reaches 23 m of height with only side branches remaining alive. It is believed to be at least 1,500 years old, possibly, as many as 2,000 years old; this makes it the oldest oak in Lithuania and one of the oldest in Europe. However, exact measurements of age are difficult as the inner part of the trunk has been removed. The oak is a nature heritage object in Lithuania and is the best known tree in the contry.
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On the outskirts of the park there is a gloomy building "Tower of slaves". It is a small, tall rectangular building from field stones, with some openings on its upper part. In serfage the landowners whipped guilty serfs and put them in the Tower. It is assumed , that the tower was built in the XVIII century when the estate belonged to Folkerzamb.
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Cache is placed near Tower of Slaves. Small sandwich box.