How to open up the gym.
go forward from the start and turn right just as you pass the first bell on the wall by the ramp. Go down this corridor and turn left at the bottom.
Follow this path until you reach a flight of stairs with a handrail with the letter A floating on it.
When the timer reads 1:40, grind the entire length of the rail. Then skate over to the gym doors and they should be open.
Do this in career mode so if you get it wrong, then just pause and select RETRY to start again. Good luck. You can pull off all of your specials in the pool.
If you need more help, we've got more Tony Hawk's Pro Skater 2 cheats and also check out all of the answers for this game
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