Tony Hawks Pro Skater 2 (playstation) Easter Egg - Hidden Gym and Pool

Start the second level(the school level) and when the run starts proceed down the ramp to the right. This will take you to a courtyard. After you hear the second bell ring, grind the role call rail that goes down the ramp on the other side of the courtyard. After grinding this rail, skate between the buildings, and go through the now open double doors up the ramp. Inside is a gym to the right and a pool to the left.