© Ville d'Esch

Museum of the Cockerill Mine at Ellergronn

Where? Centre d'Accueil Ellergronn, L-4114 Esch-sur-Alzette

Exceptional legacy from the mining era

The mine Cockerill d’Esch-sur-Alzette played a major role in Luxembourg’s economic boom. This mine is known as a unique mine endued with a colliery, and the extraction was largely made by galleries.

The Cockerill Mine is one of those beautiful stories we love to tell. After many decades of operation, the old Katzenberg mine was closed and fell into ruins—but it was not forgotten! A group of passionate former miners who wanted to pass their memories on to future generations decided to breathe new life into the old site. Following extensive renovations and improvements, the Katzenberg mine is once again a site to discover.

Home to the Cockerill Mine Museum, a nature reserve and the Nature Conservation Centre Ellergronn, it features tools, drills, fossils, machinery and operating vehicles. You can even see the foundry and check out the old “hanging room.” But don’t worry, we’re not talking about medieval dungeons here—the hanging room had nothing to do with torture. It’s where miners hung their clothes and other personal belongings to dry! 


Practical information

  • Toilets

Culture info

  • Cafeteria
  • History

Opening hours

Opening hours are subject to change. Please check them before your visit in order to be sure.
Monday30.06.2025 : 08:00 - 12:00
Tuesday01.07.2025 : 08:00 - 12:00
Wednesday02.07.2025 : 08:00 - 12:00
Thursday03.07.2025 : 08:00 - 12:00
Friday04.07.2025 : 08:00 - 12:00
Saturday05.07.2025 : 09:00 - 11:30
Sunday06.07.2025 : 09:00 - 11:30

Groups on request.

Contact

Address: Museum of the Cockerill Mine at Ellergronn
Centre d'Accueil Ellergronn
L-4114 Esch-sur-Alzette
Show on map

More sites

© Pulsa Pictures
Mine train Minièresbunn
A little time travel journey through the galleries of the Fond-de-Gras
Find out more
© Ville d'Esch
free
with theLuxembourgPass
National Museum of Resistance and Human Rights
The National Museum of Resistance and Human Rights, located on the Place de la Résistance in Esch-sur-Alzette, focuses on the history of the Second World War in Luxembourg.
Find out more
© Pancake! Photographie
free
with theLuxembourgPass
Rural and artisanal museum
The good old days…
Find out more
© Science Center
free
with theLuxembourgPass
Luxembourg Science Center
Interactive Discovery Center
Find out more
© Espace Muséologique Lasauvage
Espace Muséologique de Lasauvage
This life-size reconstruction takes you back to the days of the Second World War when a group of young Luxembourgers hid in a mine to escape the obligation to serve in the German army and wear the Nazi uniform.
Find out more
© Pulsa Pictures
Historical steam train "Train 1900"
Fancy a journey back in time ?
Find out more
© Ville d'Esch
FerroForum
At the heart of the hearth
Find out more
© Pulsa Pictures_ORT Sud
National Miners Monument
Remembering the miners of Luxembourg.
Find out more
© ORT SUD
Minière Langenacker - Bremshäischen
A monument of transport technology
Find out more