I also think of the first two Resident Evil games in particular (for that series) when the concept of a safe-house arises. Simply making it to an area where saving is possible has its own musical theme, which made it memorable and gave it a sense of the familiar and safety.

My favourite base camp concept is probably from Bard's Tale III - the Refugee camp. There was just nothing more exciting than returning from a long dungeon haul and making it back to camp with one or two hp and no spell points left, having to flee the last few random encounters…