The first decision in the construction project is to pick a site. They go to Sart, Turkey, once part of the ancient Roman city of Sardes.
They clear a corner of an olive grove for the small private bath they plan to build, much like one that might have been owned by a wealthy Roman.
They mark the foundation so that the bath's hottest room, the caldarium, faces south. The Romans would have done the same to take advantage of the sun's solar heating.