Hi,
the temple:
Partial reconstruction of the temple in Faimingen
An open-air museum has been built on the site of the former Temple of Apollo Grannus. The roads leading to Faimingen, the Roman Phoebiana, ran towards the forum and the largest Roman temple north of the Alps. The size of the plant at its heyday is estimated to be around 40 hectares.
In several excavations carried out since 1888, archaeologists uncovered the cella (double columned hall) and its forecourt as well as other foundations of the surrounding buildings. The temple itself, an approximately 1,000 m² building, was used to worship the Gallo-Roman healing and spring god Apollo Grannus. There is a merger of the name of the Roman Apollo (who was also god of healing) with the source and bath god Grannus of the Celts.
The emerging clear spring water will have contributed to the supraregional importance of Phoebiana for cult baths and drinking cures with divine assistance. Emperor Caracalla thanked god Apollo Grannus for healing his ailments with a gift (road construction to the sanctuary Phoebiana) in the year 212.