1 - Creating new characters.
2 - Completing city events.
3 - Buying and selling items.
4 - Leveling up their character.
5 - Donating to the sanctuary.
6 - Enhancing ability cards.
7 - Announcing retirement.
A new visit to Gloomhaven can be triggered after every scenario played in campaign mode (since the players may decide to return to Gloomhaven after completing/failing a scenario).