The botanic garden Park Planten un Blomen (plants and flowers) has fountains, a playground, and a rink for ice skating or blading.
You can take a guided boat tour of the lake, or rent a canoe. There are running/walking paths through the park, along with bars and cafes.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.