In GTA Vice City Stories, the same room exists, however the egg looks different. Some writing on the egg reads 'Happy Easter!'.
The player will then find himself in a small room, with a brown egg on a pedestal. To the left of the helipad, on the side of the adjacent building, there is a section of the wall that is not solid that the player can jump through.
In Downtown_ _Vice City, on the Vice City News Building, there is a helipad that the player can access by a stairway from the ground.