It is a beautiful monument in the Montgomery area. It has two museums (one is car & aviation) and the other one is war museum. During summer days you will be likely to see many people chilling in the park, which creates a lovely atmosphere! People also like their 7:00 AM morning run around the park, so if you enjoy running, get going!
It is worth to see as you can see two nice (yet old) museums that will show you history of Belgian army as well as some punctual expositions that are done from time to time.