Peach's Castle (Super Mario 64)
The Normandy (Mass Effect 3, specifically, but I'm fine with combining them in this case)
Garreg Mach Monastery (Fire Emblem: Three Houses)
Inaba (Persona 4)
Actually I guess there are a couple of RPG series where I can find something resembling a hub.
https://imgur.com/WqDcNNq
https://imgur.com/89Z5jrB