brussels airport, building 23

[Gliderpilot]

tomorrow morning i have to be at brussels airport building 23, and i dont know where it is, i have been `googling`for more then 45min and cant find it...
can someone provide me a map of some sort?? help me please

[sn26567]

In 1966 I have been working in neighbouring building 22. If I remember well (44 years is a long time) it is on the left side when you go to the airport. Entrance through the gate at the left side of the motorway bridge over the road coming from Zaventem village.