Who says that wood and water don't mix? If you ask many designers, they are a bit hesitant to put any kind of wood in a damp environment such as the bathroom, let alone surround luxury tubs in it, but that is just what these tub owners did and what an outcome!
The secret to surrounding beautiful tubs with wood relies on good hard woods. Quality woods such as mahogany, rosewood and cherry are commonly used along with a multi step sealing process.
Recommended on these wood surround tubs is a wipe down of the wood decking after a bath to maintain the woods satin finish.