<P> After the conquest of Gaul by the Romans in 50 B.C. the Rhine became part of the border of the Roman Empire . The Romans erected camps and forts along the river from the Alps down to the North Sea . The history of Speyer began with the construction of one of these camps around 10 BC for a 500 - man--strong infantry group and also intended as a base for further conquests to the east of the Rhine . The decisive factor for the location were the wedge - shaped high river banks, of which the tip pointed far east into the floodplain of the Rhine . Thus, the settlement, although right by the river, was safe from floods . Due to the river's extensive meandering such possibilities were very rare between Basel and Mainz . The first fort was erected in the eastern section of today's Maximilianstrasse between the Kleine Pfaffengasse and the Grosse Himmelsgasse . The southern moat was located along the Kleine Pfaffengasse . </P> <P> With the consent of the Romans under Emperor Augustus the Germanic tribe of Nemetes settled in the region of Speyer; other Germanic tribes from across the Rhine, the Vangiones and Triboci settled in the neighbouring regions of Rheingau and Alsace . </P> <P> After 20 years, the first fort was replaced by a second one, partially overlapping the former, its northern wall corresponding with the former southern wall of the old fort . Remains of this fort were found in the Jewish quarter . Its southern wall is assumed to have bordered directly at the edge of the high bank, along which, in those days, the Rhine was flowing . To the west and to the north the fortifications were made of a system of walls and moats . The erection of the second fort corresponds with the reorganization of the Roman Rhine frontier after the disaster in the Battle of the Teutoburg Forest . The vicinity to the east and west of the forts attracted civilian settlements (Vicus) which were the impetus for the development of Speyer as a town . The main vicus stretched to the west from Herdstrasse probably as far as Zeppelinstrasse and a smaller one in the east in the area south of the cathedral . As of 30 A.D. there were a number of representative buildings forming a "U" like a market forum, indicating that the vicus very likely already had market rights (ius nundinarum). </P> <P> The second fort was again replaced by a third one a little further away from the Rhine between the middle - section of Maximilianstrasse and Ludwigstrasse, yet, some of its area still overlapping the former forts . The reason for the move might have been a flood, lack of space or the need for a renewal . It seems that this last fort was considerably larger than the two former ones . It existed at least until 74 when the auxiliary troops were moved into the newly conquered territories east of the Rhine . Speyer was no longer a border post and lost its military significance . As of 83, it became part of the Roman province of Germania superior . The fort was given up, the vicus was granted self - government and became the capital of the Nemetes area as Civitas Nemetum, overseeing the western Rhenish plain of the Palatinate and northern Alsace . Around 150, the town appeared as Noviomagus (a Latinized form of the Celtic Novio Magos, "New Field" or "Market") on Ptolemy's world map . The same name is mentioned at the beginning of the 3rd century in the Antonine Itinerary, a road handbook of the Roman Empire, and on the Tabula Peutingeriana, another road map from the 3rd century . The name can also be found on milestones along the Rhine . As the name was shared by many other cities, Speyer was sometimes distinguished as Noviomagus Nemetum ("Noviomagus of the Nemetes"). At a central point of the Roman Rhine valley road, Speyer emerged as a representative town and an administrative regional centre . Two main streets crossed in the centre of Speyer . The decumanus (east - west street) was 6--8 m wide, leading from today's cathedral area along Kleine Pfaffengasse past the Königsplatz further to the west . Along its whole length it was lined with colonnades . A second main street started around today's Hagedorngasse and crossed the decumanus south of today's Kaufhof (department store). Strong foundations found in the area of the Königsplatz are considered to be remnants of a forum with a temple . The size of a part of a Jupiter (mythology) pillar is similar to a large pillar found in Mainz . Other findings show there were a market place, wide, public buildings, living quarters, temples and a theatre . It is practically impossible to do any digging below street level without striking remnants of this era . The numerous finds, for example the oldest preserved and still sealed wine bottle in Germany, the Speyer wine bottle, can be seen in the Historical Museum of the Palatinate (Historisches Museum der Pfalz). </P>

In the northeastern seat of the prismatic palace