The Amphitheatre. The oldest Roman building in Trier, the Amphitheater , is located in Olewiger Strasse. It was built in 100 AD from limestone. However, in the Middle Ages the amphitheater was used primarily as a quarry, where locals got the material for construction of their buildings. That is why only small remnants of the amphitheater have survived till our days. However, even these details give us an approximate idea of the original look of the structure. Its eastern part was carved in a steep slope of a mountain, and its western part was artificially raised. The arena was 75m long and 50m wide. Approximately 25,000 Romans and Trevors could watch gladiators fighting in this arena. In the III century the amphitheater was a part of the defensive wall of the city. At that time the north gate was the main entrance to the city. One can see a wonderful view of the amphitheater when walking up the hill in Vikingen Strasse.
The Roman bridge. If you make a walk on the South Alley/Kaiserstrasse, and then turn right and go along the Mosel, you will see the Roman bridge (Römerbrücke) , all the basalt piers of which (except for two piers) are the originals of the IV century. The second and the seventh piers were replaced after the bridge had been detonated in 1689 by French troops. The first wooden bridge on the site of the Roman Bridge was built during the reign of Emperor Augustus. The size and stability of the Roman bridge allow using it even these days as a part of the infrastructure of the modern city.
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