When it was founded in 2003 the park covered 6,000 ha (15,000 acres) of heathlands, shifting sands, forests, grass lands and floodplains.

In 2013 the park was extended to 10,000 ha (25,000 acres), adding the area north of highway A12 when the ecoduct Mollebos was realized.

In addition to removing fencing and creating green corridors, this should enable the migration of flora and fauna, including large animals such as deer.

[2] In the national park are many trails for walking, biking and horse riding, as well as restaurants, hotels and camp sites.

Interesting places to visit are many castles, historic villages and cities, country houses, tobacco barns and sheepfolds.