Dicke Marie is the name of this tree, and it has been here for quite some time. Some 900 years depending on what you believe. Since we chose to believe in that, 900 years it is. When this tree first set the roots on the sandy shores of Tegeler See, there were still bears around the forests. When Berlin got its first mention back in 1244, Dicke Marie was more significant than most of the house in the city, and it saw the medieval Berlin grow.