The "Katzenkopf" (1937 - 1939) was the second largest and northernmost positioned fort of its kind and is today the one still visitable "B-Werk" of the entireline in Germany of that type (including 6-Scharten tank turret and tunnelling). Since 1979 in its preserved interior parts it hosts the "Westwallmuseum" with an interesting collection of World War II weapons and photos.

During the French occupation in 1947 it was heavily damaged by dismantling actions. In 1976 a group of local volunteers of the fire service dug out the remnants and started its preservation.

On the upright standing concrete remains of its former roof, a memorial stands dedicated to the 4000 dead and missing soldiers of the 39th Füsilier-Regiment of Düsseldorf.

All activities are voluntarily done by the members of the local fire service who spent about 75,000 hours of work by now.