ti-legacy.com

Now there's a craft to make hearths, having a craft to make built-in baths/pools with Artwork would be keen:

Arguably, it could require other Artworks to create: (1426) Mosaic Design and (1645) Stone Bench or similar materials and serve as the stone version of (1496) Porcelain Wash Basin.

Makes sense. If added, they should probably be heavy and no-take similar to the hearth and fountain recipes.

Done!