While the Tower has a sci-fi look, Felwinter Peak is an almost medieval place. Rise of Iron gives you a new social hub, Felwinter Peak. It’s also a place to easily find other players. It’s where you can store items, get engrams encrypted (which gets you equipment), read mail, and accept missions. It’s the place you go between almost everything else you do.
If you’ve played Destiny, you know about the Tower.
