The Queensland Rail City network (formally known as the Citytrain) is massive covering 689 km of track consisting of 154 stations including Exhibition. It is made up of thirteen lines, ten suburban lines and three interurban lines. I'll not be visiting Exhibition as it is only accessible when the Ekka is on.
There are four stations that are located on the Main Line that are within South East Queensland but are not part of the Citytrain network which are:
Gatton
Helidon
Laidley
Closed station
Heritage service station
Closed main line
Heritage line
Disused rail tunnel
Other point of interest
Relocated station
Closed branch line
Realligned main line
Open line
Disused rail bridge