 Even today, there is a memorial stone in front of the church in Leiferde, in memory of his invention.The "Großes Weghaus", located in Stöckheim, is a former toll house and inn built in 1691 on the road from Braunschweig to the town of Wolfenbüttel.Today a plaque commemorates the inn's famous guests Gotthold Ephraim Lessing and Wilhelm Raabe.