Baumberge, Nature reserve in Reinickendorf, Germany.

Baumberge is a nature reserve in the Berlin district of Reinickendorf, made up of wooded hills, clearings, and open ground. A network of marked trails runs through the area, connecting higher points with quieter woodland sections.

The Baumberge are inland dunes blown up at the end of the Weichsel and Würm cold periods, more than 10,000 years ago. In the early 13th century, settlers called by the Ascanian margraves founded Heiligensee as "Hyelegense" and cleared woods around the hills for fields, pasture and heath for beekeepers. The open dune persists because of that historical use; the area is now a 46.95-hectare Natura 2000 site.

Locals also call the Baumberge Baggerberge or Sandberge, and the open dunes exist because of historical use: settlers called into the area by the Askanian margraves in the early 13th century cleared woods around the hill for fields and pasture, and further areas for heath used by beekeepers. The open dry grassland and heat-loving scrub that visitors see today are a result of that clearing.

The reserve is well connected to Berlin's public transport, with stops close to the main entry points. Most trails are easy to follow on foot, though some sections on the higher ground can be steeper.

The reserve is part of a Europe-wide network for protecting endangered habitats, which means decisions about managing it go beyond the local level. This also means that certain interventions common in other Berlin city parks are not allowed here.