Earlier, redwood hot tubs were a popular alternative to hot tub construction. They were used specifically for manufacturing California hot tubs. Over the time, the old growth redwood has disappeared.
Generally, these large majestic trees are found in the rain forest areas of the west coast. They have been either harvested or a part of protected forest areas. Now, you can find redwood hot tubs in small numbers. Usually, they are made from smaller second growth or famed redwood.