© 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.
Thursday11.09.2025 : 08:00 - 12:00
Friday12.09.2025 : 08:00 - 12:00
Saturday13.09.2025 : 09:00 - 11:30
Sunday14.09.2025 : 09:00 - 11:30
Monday15.09.2025 : 08:00 - 12:00
Tuesday16.09.2025 : 08:00 - 12:00
Wednesday17.09.2025 : 08:00 - 12:00

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

© Jwh (CC BY-SA 3.0 Lu)
Memorial Points in Differdange
Bits of history everywhere
Find out more
© Musée National des Mines
free
with theLuxembourgPass
National Mining Museum
Life underground
Find out more
© Ville d'Esch
free
with theLuxembourgPass
National Museum of Resistance and Human Rights
National Museum of Resistance and Human Rights
Find out more
© Pulsa Pictures
Minett Park Fond-de-Gras
The Minett Park Fond-de-Gras is an open-air museum that includes the Fond-de-Gras, the village of Lasauvage, the former open-cast mine of Giele Botter and the Celtic oppidum of Titelberg.
Find out more
© Steichencollections CNA
Waassertuerm + Pomhouse
Exhibitions in the heart of Luxembourg’s industrial heritage
Find out more
© Gaul’s Legacy Tours
Monument for Hyman Josefson
The US memorial “September 9, 1944 – We will never forget” of Pétange, is actually dedicated to the 2nd Lt. Hyman Josefson, recorded as the first US soldier to loose his life on Luxembourg territory on September 9, 1944, the first day of American troops crossing the French border area liberating parts of southern Luxembourg.
Find out more
© Pulsa Pictures_ORT SUD
Schlakewon Humpen
In the middle of the nature reserve, this old cinder tipping car really stands out. A popular photo spot and a stunning viewing platform.
Find out more
© ORT Sud
Eugène Pesch Museum Lasauvage
Ready to rock?
Find out more
© Pulsa Pictures_ORT Sud
National Miners Monument
Remembering the miners of Luxembourg.
Find out more