Chestnut Tree of One Hundred Horses in Sant'Alfio

You're standing at the Hundred Horse Chestnut, on the eastern slope of Mount Etna, near Sant'Alfio. At first glance it might look like a small cluster of trees. But look down at the ground. All those thick trunks share the same roots underneath. So this is one single tree, a sweet chestnut, and it's considered the largest and oldest of its kind in the world.