Trier, often refereed to as Treves in English, is a German city bordering Luxembourg. The city has a rich history, being found by the Celts in the 4th century BC, it was later conquered by the Romans. Many historians consider Trier to be the oldest city in Germany. The city has a lot to offer in terms of culture. There are museums, Roman gates as well as a university. This gives Trier an unique vibe, which is the reason why the city is so popular with tourists. Cannabis laws in Germany are quite liberal and finding weed in Trier should not be a problem.