The path to Bismarck's country estate in Welle leads through the most beautiful avenue of pear trees in the Altmark.
The avenue runs towards the enclosing walls of three former manor houses, which, like the Romanesque church and the large manor barn, are made of solid fieldstone.The Bismarcks' connection with Welle began in 1780, when Georg Wilhelm von Bismarck and his wife Friederike Louise Eleonore from the house of Alvensleben/Kalbe expanded their holdings in Brieste by purchasing two farms in Welle. Their eldest son Levin Friedrich von Bismarck (1771-1847) later adds a third farm, combines all parts into one large estate and has the classicist manor house built in 1820 according to the ideal model of Prussian manor houses.The Weller estate remained in the possession of the von Bismarck family until it was expropriated without replacement in autumn 1945. In 1998, Christop Mohr and Brita v. Götz Mohr acquired the listed estate from the Treuhand. The estate barn is popular for weddings and other festivities.