Weesen is a village belonging to the municipality (Einheitsgemeinde) of Südheide in the north of Celle district in Germany.

It lies within the Südheide Nature Park, on the Lüneburg Heath, about 1 km east of Hermannsburg and currently has around 520 inhabitants.

A stream, the Weesener Bach, flows through the village which, since 1999, has been placed under conservation protection along its entire length.

The aim of the exercise was to determine how in time of war, materiel could be transported to the front by narrow gauge railway as quickly as possible.

Near the farm of Severloh, east of the Bornrieth Moor the trackbed of the railway can still be clearly seen at the Citronenberg as a ditch along the side of a track.

This aim is intended to be achieved by careful hand clearing, the planting of alder trees, the opening of side ditches and the use of gravel.

Since its foundation the society has developed a range of other activities: In the mid 1980s the state of Lower Saxony directed subordinate conservation authorities to institute a programme of hedge planting in the countryside.

The society took this programme on and planted numerous bushes and trees along the field tracks with the agreement of the district of Celle, the parish of Hermannsburg and land owners.

The parish of Hermannsburg rented the land in 2007 to the Weesen Conservation Society, who enclosed the area with hedges.