The Chestnut species consist of four main, that are known as American, Chinese, Japanese, and European. Throughout these, a few species are called Chinquapin. It derives from the same family as the Oak, and also contains tannins, just like it's Oak cousin. Due to this it is extremely durable, and gives it a great resistance to the outdoors. This saves you from needing to protect, or treat the wood further. It is so similiar to Oak that it is often confused with it, mainly due to similar textures, and colors.