蜜芽传媒

Karl-Heinz Martens is a retired postman from Germany who had a very unusual beat - he delivered thousands of letters to a tree known as Bridegroom's Oak. They were love letters, written by people in the hope that a potential partner might read them and reply.

(Photo: A love letter sticks out through a small hollow in the trunk of Bridegroom's Oak. Credit: Eliot Stein)