The Chrobry Oak is an oak tree, the largest oak in Poland and one of the biggest in Europe.
It is monumental oak with single-stemmed, hollow trunk, its girth was 1004 cm, height – 26 m and volume – 90 m³. Moreover, it is the oldest oak tree in Poland. Age of the Chrobry is about 760 years, according to dendrochronological research.Oak was officially preserved since 1966.
Chrobry was measured in 1908 at the earliest, by Theodor Schube, girth of the tree was 861 cm.
Wikipedia https://en.wikipedia.org/wiki/Chrobry_Oak
Address (Unnamed Road), 59-170, Poland
Coordinates 51°31'17.703" N 15°42'42.597" E