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Berg Castle at Colmar-Berg, residence of the grand ducal family, with its square tower among the trees

Canton of Mersch, 2 localities

Colmar-Berg, a royal residence in an old forge village

Colmar-Berg is a commune in the canton of Mersch with 2,471 residents on 1 January 2026, split between Colmar-Berg and Welsdorf. It's known for Berg Castle, the Grand Duke's residence, which you can only see from outside, and for an industrial past that runs from 17th-century forges to the Goodyear tyre plant, producing there since 1951.

In 30 seconds

Full read: 2 min

  • Colmar-Berg has 2,471 residents in two localities in the canton of Mersch.
  • Berg Castle, the Grand Duke's residence, isn't open to visitors.
  • Goodyear has made tyres in the commune since 1951.
  • It has a station on the railway from the capital to the north.

Colmar-Berg is a stop on the way, not a destination. I'd hop off the train heading north, wander round the village park, look up at Berg Castle's tower and carry on to Ettelbruck or Diekirch.

Sergio LeponeMy advice

Before you go

What I would keep in mind

  1. 01 Most beautiful

    The head of state's castle

    Berg Castle is the main residence of the Grand Duke and his family. It can't be visited, but the flag on the tower tells you whether he's at home.

    Berg Castle
  2. 02 Getting there

    A station on the northern line

    Colmar-Berg has its own station on Rue de Cruchten, and second-class rail travel has been free across the country since March 2020.

    trains in Luxembourg
  3. 03 My tip

    A Celtic name

    The commune's website says Colmar comes from Celtic, col for hill and mar for big. Berg first appears in a document in the year 800.

Colmar-Berg sounds like a castle town, and fair enough, since the head of state lives here. But the village’s own story is mostly industrial. First came the forges, then the tyres, and in between a grand ducal residence rebuilt from top to bottom in the early 20th century.

A Celtic name and very old roots

The commune’s website goes right back. There are flint tools from the Mousterian period, around 40,000 BC, dozens of burial mounds on Berg’s land and the remains of 3rd-century Roman farms. According to the commune, the name Colmar is Celtic, from col, hill, and mar, big. Berg first crops up in a document from the year 800.

Forges, furnaces and tyres

In the Middle Ages, between plague and war, Colmar, Berg and Welsdorf counted just 17 families in 1540 and 5 in 1641. Numbers picked up in the late 17th century with the Colmar forges, which brought in Walloon master smiths. The commune went from 502 people in 1834 to 671 in 1866, then lost some of them when the forges, blast furnaces and foundry shut in 1917.

The next boost came with Goodyear, which began making tyres in 1951 on the old forge site. That’s where, in 1960, the last trace of Bruckenberg castle came down, built by Jean Piret around 1655 beside the forge.

One relic of that era is, to my mind, the most genuine thing in the village. The commune notes that the cast-iron graves of the old ironmasters still stand in Berg cemetery, made from the same metal that fed the valley. It’s a short, free stop, and it says more about Colmar-Berg than any leaflet.

Once your dates are set, check which hotels are still free in Diekirch before prices climb.

What’s there for a visitor?

The draw is Berg Castle, the Grand Duke’s main residence. It isn’t open, but you can see the tower among the trees, and visitluxembourg notes that the flag on the roof shows whether the Grand Duke is home. If you want to go inside a royal residence, the one that opens in summer is the palace in the capital.

The village also has a park with a pond and a wooden kiosk, which you’ll cover in a few minutes. I wouldn’t give Colmar-Berg more than an hour, and I wouldn’t pretend it’s a destination.

Getting there and where to stay

Colmar-Berg station, on Rue de Cruchten, is a stop on CFL’s northern line, where second class costs nothing, like the rest of Luxembourg free public transport. STATEC doesn’t publish a separate hotel figure for the commune. For a bed I’d carry on to Diekirch or head back to Luxembourg City.

Although the commune is in the canton of Mersch, visitluxembourg places it in the north of the country, in the Luxembourg Ardennes. It’s a few stops from Mersch, whose castle is now the town hall, and from the Nordstad towns. Just north, neighbouring Schieren has a circular walk that loops back through Colmar-Berg. West along the Attert lies Bissen, with St Roch’s chapel up on the Wobierg.

Once your dates are set, check which hotels are still free in Diekirch before prices climb.

If you would rather have a local show you round, book a guided tour in Diekirch and choose by the reviews.

A car frees you from timetables: search car hire in Luxembourg on DiscoverCars and compare companies.

So you do not pay over the odds, look at trains, coaches and flights to Luxembourg on Omio and pick the one that suits you.

The public park at Colmar-Berg with a pond, waterside trees and a wooden pavilion by the water

The public park at Colmar-Berg with a pond, waterside trees and a wooden pavilion by the water

Colmar-Berg at a glance

ItemFigureSource
Residents on 1 Jan 20262,471STATEC
Official localities2CACLR
Residents in 1866671Commune of Colmar-Berg
Goodyear tyre production since1951Commune of Colmar-Berg

STATEC doesn't publish a separate hotel figure for the commune.

Test yourself

True or false?

0/3 Pick before you peek.

  1. Colmar-Berg once had forges and blast furnaces.

    See the answer

    True. The commune's website says forges arrived in the late 17th century and closed in 1917, together with the blast furnaces, workshops and foundry.

  2. You can tour Berg Castle in summer.

    See the answer

    False. It's the Grand Duke's residence and can only be seen from outside, all year round.

  3. The commune has its own railway station.

    See the answer

    True. CFL lists Colmar-Berg station on Rue de Cruchten, on the line north from the capital.

Residents on 1 January 2026
2,471
Official localities
2
First mention of Berg
800
Goodyear starts production
1951

Map

Where Colmar-Berg is

The thick dashed line is the border with Belgium, France and Germany, and the fine ones divide the twelve cantons. The Éislek lies to the north and the Moselle to the east. Every number opens its guide.

  1. 1ViandenCanton of Vianden, on the River Our
  2. 2ClervauxCommune of 6,327 people, canton of Clervaux
  3. 3WiltzCanton of Wiltz, population 8,538
  4. 4PutscheidCanton of Vianden, 27.13 km²
  5. 5TandelCanton of Vianden, 11 localities
  6. 6Esch-sur-SûreCanton of Wiltz, commune population 3,373
  7. 7Lac de la Haute-Sûre (commune)Canton of Wiltz, population 2,320
  8. 8DiekirchCanton of Diekirch, the Nordstad
  9. 9EttelbruckCanton of Diekirch, heart of the Nordstad
  10. 10Erpeldange-sur-SûreCanton of Diekirch, next to Ettelbruck
  11. 11SchierenCanton of Diekirch, 3 localities
  12. 12FeulenCanton of Diekirch, Niederfeulen and Oberfeulen
  13. 13BettendorfCanton of Diekirch, Bettendorf, Gilsdorf and Moestroff
  14. 14Colmar-BergCanton of Mersch, 2 localities
  15. 15Parc HosingenCanton of Clervaux, 272 to 517 m
  16. 16WinselerCanton of Wiltz, population 1,590
  17. 17GoesdorfCanton of Wiltz, population 1,682
  18. 18TroisviergesCanton of Clervaux, the country's far north
  19. 19KiischpeltCanton of Wiltz, population 1,309
  20. 20WeiswampachCanton of Clervaux, on the Belgian border
  21. 21BoulaideCanton of Wiltz, population 1,579
  22. 22WincrangeCanton of Clervaux, 113.36 km²
  23. 23BourscheidCanton of Diekirch, 206 to 513 m

What to see

What to see in Colmar-Berg

0 of 425 Luxembourg guides

Your next stamp

  1. Berg Castle
  2. Koerich
  3. Mersch

Frequently asked questions

What is there to see in Colmar-Berg?

Berg Castle from outside, home of the Grand Duke, and the village park with its pond. It's a small place for a short stop on the northern railway line.

Can you visit the castle in Colmar-Berg?

No. Berg Castle is the Grand Duke's residence, and visitluxembourg says it can only be seen from outside to protect the family's privacy.

How do I get to Colmar-Berg from Luxembourg City?

By train to Colmar-Berg station, on the line from the capital to Ettelbruck. Second class is free, as is all public transport in Luxembourg.

How many people live in Colmar-Berg?

2,471 on 1 January 2026, according to STATEC. The commune's website says it had 671 in 1866 and grew after Goodyear arrived in 1951.

Is Colmar-Berg in the Luxembourg Ardennes?

visitluxembourg places it in the Éislek, the north of the country, although for administrative purposes it belongs to the canton of Mersch in the centre.

Sergio Lepone

By

Tourism graduate with a master’s in Tourism Management and Planning from the University of Málaga, who has travelled across Europe. He writes every guide from official sources and his own judgement.

Published on . Facts checked on .

How I check every fact and where it comes from

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Photos: Nikilux (CC BY-SA 3.0 lu); Cayambe (CC BY-SA 4.0), via Wikimedia Commons.