What is the type of tree described in a diary that was given to Otto Frank?
Anne Frank tree: The Anne Frank tree (Dutch: Anne Frankboom or, incorrectly, "Anne Frank boom") was a horse-chestnut tree ("Aesculus hippocastanum") in the city center of Amsterdam that was featured in Anne Frank's "The Diary of a Young Girl". The Diary of a Young Girl:  The diary was retrieved by Miep Gies, who gave it to Anne's father, Otto Frank, the family's only known survivor, just after the war was over.
horse-chestnut tree ("Aesculus hippocastanum")