Here is a list of places with stairs in destiny alpha. It is incomplete, so we are going to add places with stairs as soon as they are discovered in beta and in the final game. 1) Old Russia has stairs, there is a big staircase in the first alpha mission when you first meet the wizard that comes from the moon. 2) The tower since it's a tower has stairs. It may have elevators too but haven't seen them, maybe those are closed off. 3) The Crucible deathmatch map on earth had stairs near the point A and C. Point B is inferior because it doesn't have any. 4) The moon map was very light on stairs, but there were few in a circular area near point B if I remember well.