Maastricht City Fortifications (Frontenpark)

The Frontenpark is a city park and nature park on the edge of the center of the Dutch city of Maastricht. The park contains remnants of Maastricht's fortifications, as well as examples of industrial heritage. By repurposing industrial buildings, the area is also developing as a cultural park.

A piece of nature in the middle of the city.

The Frontenpark with the fortifications is a city park and nature park on the outskirts of the center of the Dutch city of Maastricht. The park contains remains of the fortifications of Maastricht as well as examples of industrial culture. By converting industrial buildings, the area is also developing into a cultural park.
As early as the 16th century, there were outdoor facilities outside the second medieval city wall of Maastricht, consisting of earthen ramparts, sometimes with wooden palisades, separated by wet and dry channels. These were mostly temporary in nature and nothing has been preserved. From the 17th century onwards, there was a gradual fossilization of the fortifications. The area now known as the Line Du Moulin was almost completely renovated from 1772 to 1777 according to plans by the chief engineer Carel Diederik du Moulin. This is currently (2019) the best preserved part of the fortifications of Maastricht.
At the Cabergerweg, the line from Du Moulin became the Nieuwe Bossche Fronten, a lower area characterized by wet channels between the fortifications. This northern part was completely renewed in 1816-22 and was then called Nieuwe Bossche Fronten. Fort Willem I was also built during this period, which occupies a front position on the Caberg. Although the interdependence of the high and low fronts and the fort was disrupted by the existing transport infrastructure, the fortifications remained in many places.
Source:
nl.wikipedia.org/wiki/Frontenpark