Mieszko oak
The Mieszko oak [ 'mʲɛʃkɔ- ] is one of the oldest trees in Poland .
The pedunculate oak was declared a natural monument. It is located in Warsaw district Ursynów , at the portion of the road Ulica Nowoursynowska which directly along the border Natoliński park at the Vistula slope runs. It has undergone several conservation measures and is fenced. The trunk circumference is 840 cm at a height of 1.3 m.
According to the information on the information board attached to the oak, it is around 1000 years old. However, advances in dendrochronology seem to suggest that the Mieszko oak is much younger. According to the latest research, it is around 620 years old.
The oak is named after Mieszko I , the first historical ruler of Poland .
Coordinates: 52 ° 8 ′ 32 " N , 21 ° 4 ′ 10" E