Today the grounds of the Fort near Hinderdam are hardly recognizable as such, because the island is fully overgrown. Natuurmonumenten (a society for the preservation of nature monuments in the Netherlands) consciously allows nature to erase the traces of the military past. Because of its island position, Hinderdam is still very isolated. On the island you can find a shellproof guardhouse from the year 1848 and a storage depot with gunpowder cellar and missile filling station dating back to 1880.
The function of the Fort near Hinderdam was to defend the accesses that were formed by the K.J. Toonekade (a quay, now named Dammerkade) and both banks of the river Vecht. Originally, the Fort near Hinderdam was part of the Dutch Waterline. In 1913, it was incorporated into the Defence Line. Between 1934 and 1939, a machine gun casemate and three concrete group shelters were added to the structure.