A sanctuary with three fana (Gallo-Roman temples), a small bath building, an amphitheatre, several necropolis and remains of buildings where discovered in 1763 and excavated in 1956 near Bern.
It has an ellipsis shape arena, whose axis are 28 x 26 metres, two walls which could be an entry at one end, and a niche at the other end. Its blenches were probably wooden made. Long regarded as an amphitheatre (it would one of the smallest in the Roman empire), the building could be also a Gallo-Roman theatre (according a recent hypothesis), and the walls opposite to the niche would be the basis of a wooden scenic building. The proximity of the amphitheatre with the sanctuary is significant and it could used for various public shows as well as religious ceremonies.
At the north of the amphitheatre, in the forrest, a small public bath-house is visible under a modern roof. The building, discovered in 1847 and entirely excavated between 1937 and 1938, was 20 metres long and 12 metres large. The bath-house has a cloakroom (apodyterium), a cold bath (frigidarium) with a pool, a warm room (tepidarium) and a hot bath (caldarium). The underfloor heating system is quite well preserved.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.