I love to see examples of Nature taking back/breaking down the works of humankind. A poem in my book, Towards Humanity, deals with this very subject: the poem is called ‘Roofscape from Manchester Art Gallery’. However, here is a wonderful example that is just around the corner from where I live.
You might be pleased to know that the post box is still in use!
It’s all over now
no more calls
and ivy climbs up the bloody walls