Alexandra had one. Barbara had one at Précy, and I have one--though all you see is the base of the trunk behind Ricardo Casillas!
It's a special kind of tree which happens when you get two willow saplings and plait them from being very small. Barbara's was about 15 feet tall. Alexandra's and mine are around 25 feet tall, almost as tall as the eucalyptus next to it, and have been so-plainted so that you can sit in them! The spread of my Gardan (believed to contain protective spirits, so I'm all right, then!) is well over 30 feet, and covers almost half the width of the garden. But what a mess at this time of the year when the leaves start to drop! Must post a better picture when I get around to it!