I can't find Avenue Dupuich in my map
I just see "Bois de la Cambre and then my map ends
Where is the Royal Leopold Club? In the south, west, east or north of Bois de la Cambre?
And how will I find it by car?
It's just west from Ter Kamerenbos (Bois de la Cambre).
Do you see the Chaussée de Waterloo on the west side of the park? So go to that chaussée and in the north-west corner of the park you will see the Avenue Winston Churchill going to the west. Turn into that Avenue and after a few hundred metres you will see the Rond Point Winston Churchill (it's a large roundabout). Turn around and turn into the 6th street which is the Avenue Leo Errera. Then take the first street on your right and that is the Avenue Dupuich. The Royal Leopold Club is on your left side down the street.