At the northwest end of Salona’s town limits, subsequently fortified, there is an amphitheatre, which forms part of the town defence system. Its remains are comparatively well-preserved, showing the benefits of the well known reconstruction made by the Danish archaeologist Ejnar Dyggve.
Dyggve considers that the amphitheatre was designed by Roman architects who performed similar tasks elsewhere too, and that it was built in the second half of the second century AD. Today, we can see only the lower parts of its large walls, largely reconstructed in the 1950s. During the Venetian époque, it was intentionally damaged to prevent it from being used by the Turkish units during their war with Venice in the 16th and the 17th centuries. After that, it was used as a quarry from where stone for house building was being taken, like in many other places.
It is believed that it could have accommodated about fifteen thousand, or even more, spectators. In order to enable fast entrance to and evacuation from the auditorium, a double system of communications was designed: radial, as related to the building ellipse, and circular, as related to the levels of the seat rows. Such a system is quite often at large sports’ stadiums of today. Because of its location along the northern and, partly, the western town walls. Its main entrances must have been in the south and the east walls, which is a deviation from the system comprising two entrances in the east – west longitudinal axis. On its northern side, it stood on elevated soil, some of the walls built on marl (still visible) having therefore no foundations, unlike the other sides. On the southern side, and also on parts of the western and eastern sides, it had three floors: two with arcades and the third with rectangular windows.
In the vicinity of the amphitheatre, to its south, there was a cemetery for gladiators killed in the arena. From their epitaphs, we learn their names, origins, homelands and fighting specialities.
References:Ehrenbreitstein Fortress was built as the backbone of the regional fortification system, Festung Koblenz, by Prussia between 1817 and 1832 and guarded the middle Rhine region, an area that had been invaded by French troops repeatedly before. The fortress was never attacked.
Early fortifications at the site can be dated back to about 1000 BC. At about AD 1000 Ehrenbert erected a castle. The Archbishops of Trier expanded it with a supporting castle Burg Helferstein and guarded the Holy Tunic in it from 1657 to 1794. Successive Archbishops used the castle's strategic importance to barter between contending powers; thus in 1672 at the outset of war between France and Germany the Archbishop refused requests both from the envoys of Louis XIV and from Brandenburg's Ambassador, Christoph Caspar von Blumenthal, to permit the passage of troops across the Rhine.