The Celts have not shown themselves either in the creation of large political entities of state character, or in monumental architecture. The Celts were not creators of architectural monuments of monumental character, they were only builders of fortresses, which speak about their organizational skills and are the result of well organized work of huge teams. Conventional fortification systems in the Celtic world were built according to ancient local traditions. The typical Gallic wall described by Caesar, geographically limited to certain areas of the Celtic world, was already mentioned in the chapter on oppidums. Where buildings of a representative or monumental character were built, they were influenced and helped by others. This was the case with the construction of a fortress with bastions in Heineburg in the late Hallstatt period and with buildings on the South French coast in the La Tene period. In the so-called Celtic architecture and sculpture it is necessary to fundamentally distinguish the South French territory around Massilia and in the lower reaches of the Rhone, essentially Celtic-Ligurian, from the Celtic interior proper, from France to the east through the Czech lands and the Carpathian Basin.