2000 years in 2 hours. During the guided tour through the oldest city in Germany you will get to know the highlights of Trier. Starting at 6 p.m. you will walk through the old town, starting at the roman Porta Nigra. A nice ending after the TeaP 2023. If you have ordered a ticket for the Guided City tour, your Conference Badge shows a little monument with a letter. The letter signifies your group for the guided tours, all guided tours will start in front of the Porta Nigra at 6 p.m..