Treva
Treva is the historical original name -during the short-lived creation of the roman province of Germania- of the actual city of Hamburg in Germany. History. Romans reached the Elbe river under Augustus and conquered all the German territories west of this river. Some evidences indicate that they built a "marching camp" in a small island of the estuary of the river Elbe, in a place where their ships could arrive (and be protected by a small port) when sailing from Flevum - a Roman port near the Rhine river. This place was called "Treva" and later probably had a  small vicus populated by local Germans with some Roman merchants. The origin of the name is similar to the latin name of Trier: "tre" from Latin "trans" (through) and "va" from German "var" (river). Indeed Lucius Domitius Ahenobarbus (the successor of Tiberius in Germania) commanded the Roman army to the area of Treva and crossed the Elbe around 4 BC, during which he set up an altar to Augustus (probably in the western area of Brandenburg). His campaign followed the one with the creation by Drusus of small fortifications (one could have been "Treva", but there it is no archaeological  discovery about) along the rivers Weser and Elbe, done some years before. So -after Drusus- Ahenobarbus penetrated further into the country than any of his predecessors had done. Furthermore, the future emperor Tiberius campaigned extensively while in Germany, even conducting some amphibious operations along the Elbe River in 5 AD and probably landing also in the surroundings of Treva. Later, Germanicus in 15 AD reached Treva and again crossed the Elbe river in his military campaign, before the final withdrawal of the Romans west of the Rhine river. Claudius Ptolemy (2nd century AD) reported the first name for the vicinity  as "Treva". He also indicated that Treva was at the intersection of ancient commercial routes that have been used, among other things, for transporting the then very valuable amber. The actual name "Hamburg" comes from the first permanent building on the site, a castle which the Emperor Charlemagne ordered constructed in 808 AD. It rose on rocky terrain in a marsh between the River Alster and the River Elbe as a defence against Slavic incursion, and acquired the name "Hammaburg" ("burg" meaning castle or fort and "hamma" marshes in old German language). Recent archaeological discoveries in the center of Hamburg  have proved the existence of a trade settlement during Roman times.