Somewhere you wouldn’t mind just leaving it on and enjoying the ambience rather than playing
I like the Fire Temple in Ocarina, its darkly warm and the music is relaxing sort of
Most of the soundtrack from Stray
Some from Nier Replucant & Automata
Temple of drifting sands
If you’re looking for warm and relaxing with a fantasy twist Hogwarts Legacy has a great OST
Might be stretching dungeon/temple stipulation, but I always loved the music in the haunted houses in Super Mario World.
A lot of places in WoW. Some of my favourites: Shrine of Seven Stars, Dalaran, Icecrown Citadel, Mogu’shan Vault, Tomb of Sargeras, Karazhan, Throne of Thunder.
It’s not a dungeon by most definitions, but basically all of the ambience of Portal; especially when you’re in the backrooms of Aperture Science fumbling about trying to find an escape and GLaDOS is speaking through shitty far-off speakers. The music is a vibe
If I can skirt the conversation to talk more about the soundtrack and less about the ambiance (which I will), then Dicey Dungeons. I deliberately stall battles just to hear more of the OST. Tempting Fate is my favorite track.