The Maison de la Nature, formerly the “Kräizhaff” farm, also known as Schnappshaff, was built in the 1820s in Kockelscheier, on land belonging to the municipality of Roeser.

In the 1970s, the site was purchased by the City of Luxembourg and renovated. It was not until 1994 that the Maison de la Nature and the adjacent grounds were made available to the “nature activities” department of the City of Luxembourg’s Education Service, to natur&ëmwelt .s.b.l., and to the Hëllef fir d’Natur Foundation.

Today, the Maison de la Nature serves as a center for documentation, information, awareness-raising, and education on sustainable development and nature conservation.

The Maison de la Nature, formerly the “Kräizhaff” farm, also known as Schnappshaff, was built in the 1820s in Kockelscheier, on land belonging to the municipality of Roeser.

In the 1970s, the site was purchased by the City of Luxembourg and renovated. It was not until 1994 that the Maison de la Nature and the adjacent grounds were made available to the “nature activities” department of the City of Luxembourg’s Education Service, to natur&ëmwelt .s.b.l., and to the Hëllef fir d’Natur Foundation.

Today, the Maison de la Nature serves as a center for documentation, information, awareness-raising, and education on sustainable development and nature conservation.The Kalborn Mill, located in the Our Valley, was first mentioned in 1728. Originally a communal mill belonging to the lords of Clervaux, the Kalborn Mill operated as a contract mill until World War I, meaning that the miller would travel through the surrounding villages with his team of horses to collect grain. It was not until the mid-19th century that the mill was expanded and equipped with three millstones. From then on, the farmers brought their grain to be ground themselves. During World War II, the German occupation brought an end to the mill’s operations, and it was never reopened. Nevertheless, the mill remained inhabited until 1982.

In 1997, the Hellef fir d’Natur Foundation purchased the mill and converted it into a breeding and biological research station for the freshwater pearl mussel (Margaritifera margaritifera), which had become rare and critically endangered.Today, the renovated buildings of the Kalborn mill house the Water Discovery Center (WEZ), the freshwater mussel breeding station, and the Natura 2000 room.

Supported by the commune of Clervaux from the outset in 1998, the Antenne Nord was created to be as close as possible to our major nature reserves such as Cornelysmillen. Initially based in Munshausen, then in Heinerscheid, the Antenne Nord is now located in Marnach, in a community house.

It is not only an information center, but above all an office for all the Foundation's environmental projects in the north of the country.

In Schwebsange, on the banks of the Luxembourg Moselle, the Fondation Hëllef fir d'Natur took over the Mediterranean garden created over the past 30 years by Charles Roovers and Dieter Lingener at the end of 2009.

In 2012, the former small barn was converted into a cold house for overwintering plants in tubs, and is available to visitors to the garden and the center's activities in summer. The upper floor houses the center's offices and a reference library containing horticultural literature, also accessible to visitors.

The Ecological Cultivation Center is the point of contact for visitors and garden enthusiasts, where numerous activities are organized throughout the year.