A day trip from Luxembourg to Trier, the Roman city next door

If you’re only going to cross one border on your trip to Luxembourg, make it towards Trier. The German city was a great capital of the Roman Empire, and it shows the moment you step out of the station. It’s 48 km from the Luxembourg capital, with a direct train every hour, and its tourist office is rightly proud of the density and quality of its Roman buildings, which UNESCO recognised forty years ago. If you’ve been to Bath or Hadrian’s Wall, you’ll appreciate the scale of what’s here, on the banks of the Moselle, a short hop from Luxembourg.

How do you get there?

The train is easiest. CFL’s line 30 links Luxembourg, Wasserbillig and Trier, and on the timetable valid until 12 December 2026 the direct RE leaves the central station at 33 minutes past the hour during the day and reaches Trier Hauptbahnhof about 50 minutes later. The 8:33, for instance, arrives at 9:23. There are also stopping trains that call everywhere.

Here’s the important bit. Luxembourg’s free public transport only covers the stretch to the border, so the German part of the journey has to be paid for. I couldn’t find the fare published officially, so ask at the station. And watch out for engineering works. On the night of 5 October and the nights of 12 to 16 October 2026, from 9:30pm to 4am, a replacement bus runs between Luxembourg and Wasserbillig. If you’re coming from further afield, such as Frankfurt, Trier is the gateway I describe in Frankfurt to Luxembourg. There’s more on rail travel in train to Luxembourg.

By car it’s 48 km, and in summer the Luxembourg government portal mentions boat trips along the Moselle to Trier.

The Porta Nigra and the rest of Rome

Trier’s tourist office dates the Porta Nigra’s foundation stone to around AD 170 and calls it the best-preserved Roman city gate north of the Alps. It’s open 9am to 6pm, adult entry is €6, and you can climb inside to the upper floors. In September 2026 part of the gate is scaffolded for restoration, though it remains open.

The Basilica of Constantine is my favourite. It’s the palace hall the emperor had built around AD 310, and the city presents it as the largest column-free hall of antiquity. Today it’s a Protestant church, has had an organ of more than 6,000 pipes since 2014, and entry is free except for concerts. The amphitheatre, 120 by 145 metres, is set into the slope of the Petrisberg and ranks among the ten largest surviving Roman amphitheatres.

If you are staying the night, see the best hotel deals in Luxembourg for your dates: the well-placed rooms go fast.

Why is it on the UNESCO list?

On 28 November 1986 UNESCO inscribed Trier’s Roman monuments together with St Peter’s Cathedral and the Liebfrauenkirche as a single site. In 2026 the city is marking the 40th anniversary with special guided tours, exhibitions and events at the Imperial Baths, the regional museum and the cathedral.

The stop almost nobody makes

On the way back, it’s worth getting off at Igel, a stop on line 30 about 10 km from Trier. There, still in its original spot, stands the Igel Column, a 23-metre funerary monument that the city describes as the largest surviving tombstone north of the Alps. It was put up by a family of cloth merchants, Goethe saw it in 1792, and it’s free to visit.

If Roman history is your thing, Luxembourg has the other side of the same story. The Echternach Roman villa is described as one of the largest around Augusta Treverorum, which was, of course, Trier.

If you are staying the night, see the best hotel deals in Luxembourg for your dates: the well-placed rooms go fast.

My plan for a day

An early train, the Porta Nigra as soon as it opens, the cathedral and Liebfrauenkirche mid-morning, lunch in the centre, the Basilica of Constantine afterwards and the amphitheatre to finish before 6pm. And on the train home, a stop at Igel if there’s still light. The timings are in the itinerary above, and they leave some slack for a coffee on the Hauptmarkt. If you’d rather not rush, Trier easily fills a second day, with the Imperial Baths, the regional museum and a walk along the Moselle, but for a first visit from Luxembourg I think a single well-planned day does the city justice.

If you’re weighing up Trier against other places nearby, I compare them in places to visit near Luxembourg. And every day trip from the capital, at home or abroad, is in day trips from Luxembourg.

So you do not lose the morning at the ticket office, browse tickets and tours in Luxembourg on GetYourGuide.

If you would rather go at your own pace, see the car hire deals in Luxembourg: the earlier you book, the more cars are left to choose from.

Before you fix your dates, compare tickets to Luxembourg: the same journey can cost very different amounts from one day to the next.