The north door of St Edward's Church in Stow-on-the-Wold is flanked by two yew trees three centuries old. Without any concrete evidence beyond the fact that J. R. R. Tolkien lived in nearby Oxford and occasionally visited Stow-on-the-Wold, it is claimed that these doors were the inspiration for the Doors of Durin. They do bear some resemblance to his drawing of the Doors, so you can see why people made the association.
Here's a photo of them I took when we visited Stow-on-the-Wold last month:
It's at a poor angle because there were queues of people waiting to have their picture taken standing in front of the door, and I had little time between them for a clear shot.
They do look good, anyway, regardless of any connection with Tolkien.