Indicated on streetmap as a viewpoint on the nature reserve of the mouth of the Seine (reserve naturelle del'estuaire de la Seine). Here you indeed have a beautiful view of the nature reserve. And a little further even a Vondelpad to a didactic pond.
At the estuary of the Seine is a national nature reserve which occupies more than 8,500 hectares. From the house in the reserve, you can learn about the protected species and enjoy an impressive view of the Seine and its surroundings.