In message , at 20:13:13 on Tue, 16
Jun 2009, tim..... remarked:
Just wondering: How many of us have visited (and in my case,
photographed) every rail, tube, DLR and tram station within the
Travelcard area (including Metropolitan stations out to "Zone 9")?

Anyone who has attempted the Guinness Book of Records "visit every station
in the shortest time" will have, err, visited every [tube] station.

what counts as "visited"?

That depends. While some us appreciate that the OP has photographed the
outside, you could qualify just by photographing the platforms...
--
Roland Perry