In the garden of Anna Frank's house (the teenage girl whose diary while in isolation in her Amsterdam house during WWII made her famous), there is a chestnut tree. In 2007, there was a lot of discussion about the tree, because the city of Amsterdam wanted to cut it down. However, as Anna Frank herself described the tree in her diary, cutting it down implies the end of an important historical symbol for the city. So much so, that a neighbour auctioned a chestnut from that tree on eBay to help re-grow the "Anna Frank tree". The price for that chestnut went up to almost 7000 euro!