This weekend's show has miniature train enthusiasts from Hamilton, Matamata, Napier and Tauranga gathering with the local club to show a variety of train layouts.
It will take organisers more than a day to set up the collections and to squeeze the tracks into the two floors of space.
The yearly event is popular with families and Thomas the Tank Engine in particular has seen children become interested in going to the show.
As well as trains, radio control aeroplanesand doll houses will be displayed.
The Ngongotaha Volunteer Fire Brigade is also attending with an engine and members are holding a sausage sizzle to raise funds for a new station.
Details:
* What: Rotorua Model Train Show
* Where: Rotorua Racecourse
* When: Saturday, 9.30am-4pm; Sunday, 9.30am-4pm, Monday, 9.30am-2pm.
* Cost: $6 adults, $3 children, $18 family of 5.