boeingbus2002,
We stongly encourage that pilots visit an ATC facility, I always try to get pilots to visit a tower, approach control, and enroute facility so that they can see how each facility operates.
In the US we try to get pilots to shawdow a controller for part of a day. The plugs in with the controller so that he/she can watch and see how the controller works traffic, and how various situations (traffic levels, weather, etc.) are handled.
Mike
NATCA FWA