Where the park touches the Parkweg are the remains of the medieval walls with the Kruittoren (powder tower) (built around 1425).

After Nijmegen lost the status of fortified town in the Vestingwet (Constitution) (1874), the demolition of the fortifications started in 1876 and plans were made for the Explanation or expansion of the city.

The garden and landscape architect Liévin Rosseels from Leuven came in 1881 with a new design that was approved.

He was advised in this by builder Pierre Cuypers, who restored the Powder Tower from 1878 to 1883 and put a major stamp on the decision to keep the city wall and to take it into the park.

[1] In the park there is a limestone statue of the Lion, which was donated in 1886 by the Nijmegen embellishment association.