The Wilhelm Raabe Tower (German: Wilhelm-Raabe-Warte) is one of the few surviving Kaiser towers (Kaiserwarten). It is located on the Eichenberg hill near Blankenburg on the edge of the Harz Mountains of central Germany. It is owned by the Harz Club branch in Blankenburg. It was built in 1896 in honour of Wilhelm II, the German emperor and King of Prussia and is one of the few surviving Emperor Towers.