It features the wide valley of the river Dünnern behind the Weissenstein, the local mountain.
Collas became the landlord of several estates in East Prussia like Dommelkeim (1703–1753), Naujeninken (1703–1731), Brandwehten (1703–1731), Perkuhnen (1717–1731), Sauerwalde (1720–1731), Laugallen (1718–1731), Kraupischkehmen, (1718–1731), Weißenstein/ Gutenfeld (1721–1753) and owned houses in Wehlau (1721–1753) and Borchersdorf (1724–1753), in total he possessed about 2,720 Hectare.