Isometric view of the Roman bath complex and sacred spring of Sulis Minerva.
The top left hand corner contains the temple complex and the source of the sacred hot spring, which feeds the octagonal shaped reservoir. This hot water is then fed into the top left hand corner of the rectangular Great Bath. This was probably the hottest part of the bath and may have been reserved for the most prodigious patrons of the bath house.
Other cold immersion pools line the top edges of the complex, while the sacred hot spring water gradually cools off as it drains to the lower pools before exiting via a culvert in the Abbey courtyard.
