Entrance fee: Free
Open house hours: Saturdays 9am to 12pm.
Where: Any fire station in Singapore (except Jurong Island Fire Station)
Tel: 1 800 280 0000 for general enquiries.
Call 6848 1519 to make a booking if visiting with a group size greater than 10.
Note: No prior booking required. But if you are visiting with a group comprising over 10 people, you are advised to make a prior booking, to avoid overcrowding at the fire station. They generally do not recommend groups larger than 50, due to space constraints at the stations.

Our take on this place:
Watch, and maybe get a chance to hop into the cage of, the Combined Platform Ladder (CPL) as it ascends. I don't think they will let it ascend 30 meters high with kids on it, although it's fully capable of doing so.
Yes, you get to hop onto the seat of this large vehicle as well. Great touch and feel experience.