The „aire de Capellen” belongs to the fuel stations doing bestselling of fuel in Europe and belongs worldwide to the top 5 (Wikipedia)
Playground 1 at N49 38.100 E005 58.412
Count the arcs (Picture 1) = A
Playground 2 at N49 38.070 E005 58.224
Count the green spiral springs on the rocking chairs (Picture 2) = B
Number of big holes in the head = C
Final location : N49 38.0(10*A) E005 58.(C-1)BB